How to fix my slow, freezing Macbook Pro (2012 version)?

Hi! I bought my macbook pro in Jan 2013, it is the Mid 2012 version. Since yesterday, it is running super slow, and freezes constantly. I've deleted a lot of files from my computer and transferred them to a usb to clear out some place on the disk. Still, the mac is lagging and color wheel shows up for nearly anything I do on the computer.

Boot into your Mountain Lion Recovery partition (hold down the command and R keys whilst booting) and use Disk Utility to both repair permissions (there will be some that cannot be repaired - you can safely ignore these) and then verify your hard drive. Repair if necessary.
The type of slowness that you write about can sometimes - sometimes - be caused by a failing hard drive. Let's just hope you pass the verify test.
Call back,
Clinton

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My macbook pro is running slowly. How do I speed it up? Problem description: Slow macbook pro EtreCheck version: 2.1.2 (105) Report generated December 12, 2014 at 9:28:15 AM EST Hardware Information: ️      MacBook Pro (13-inch, Late 2011) (Verified)

Problem description:
Slow macbook pro
EtreCheck version: 2.1.2 (105)
Report generated December 12, 2014 at 9:28:15 AM EST
Hardware Information: ℹ️
MacBook Pro (13-inch, Late 2011) (Verified)
MacBook Pro - model: MacBookPro8,1
1 2.4 GHz Intel Core i5 CPU: 2-core
4 GB RAM Upgradeable
BANK 0/DIMM0
2 GB DDR3 1333 MHz ok
BANK 1/DIMM0
2 GB DDR3 1333 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
Intel HD Graphics 3000 - VRAM: 384 MB
Color LCD 1280 x 800
System Software: ℹ️
OS X 10.10.1 (14B25) - Uptime: 5 days 1:56:44
Disk Information: ℹ️
TOSHIBA MK5065GSXF disk0 : (500.11 GB)
S.M.A.R.T. Status: Verified
EFI (disk0s1) <not mounted> : 210 MB
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
Macintosh HD (disk1) / : 498.88 GB (50.81 GB free)
Core Storage: disk0s2 499.25 GB Online
MATSHITADVD-R   UJ-8A8
USB Information: ℹ️
Apple Inc. FaceTime HD Camera (Built-in)
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Inc. BRCM2070 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Computer, Inc. IR Receiver
Thunderbolt Information: ℹ️
Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
Mac App Store and identified developers
Kernel Extensions: ℹ️
/System/Library/Extensions
[not loaded] com.Logitech.Control Center.HID Driver (2.6.0) [Support]
[not loaded] com.palm.ClassicNotSeizeDriver (3.2.1) [Support]
[not loaded] com.wacom.kext.pentablet (5.0.5) [Support]
Startup Items: ℹ️
HP IO: Path: /Library/StartupItems/HP IO
Parallels: Path: /Library/StartupItems/Parallels
Startup items are obsolete in OS X Yosemite
Problem System Launch Agents: ℹ️
[failed] com.apple.AirPlayUIAgent.plist [Details]
[failed] com.apple.CallHistoryPluginHelper.plist
[failed] com.apple.CallHistorySyncHelper.plist
[failed] com.apple.cmfsyncagent.plist [Details]
[failed] com.apple.coreservices.appleid.authentication.plist [Details]
[failed] com.apple.EscrowSecurityAlert.plist [Details]
[failed] com.apple.icloud.fmfd.plist
[failed] com.apple.lookupd.plist
[failed] com.apple.sbd.plist [Details]
[failed] com.apple.security.cloudkeychainproxy.plist
[failed] com.apple.spindump_agent.plist [Details]
Problem System Launch Daemons: ℹ️
[failed] com.apple.AssetCacheLocatorService.plist [Details]
[failed] com.apple.awdd.plist
[failed] com.apple.ctkd.plist
[failed] com.apple.GSSCred.plist
[failed] com.apple.icloud.findmydeviced.plist
[failed] com.apple.ifdreader.plist
[failed] com.apple.nehelper.plist
[failed] com.apple.periodic-daily.plist [Details]
[failed] com.apple.periodic-weekly.plist [Details]
[failed] com.apple.softwareupdate_download_service.plist [Details]
[failed] com.apple.spindump.plist [Details]
[failed] com.apple.tccd.system.plist [Details]
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[failed] com.apple.xpc.smd.plist [Details]
[failed] org.cups.cupsd.plist [Details]
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[loaded] com.hp.help.tocgenerator.plist [Support]
[running] com.wacom.pentablet.plist [Support]
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[loaded] com.adobe.fpsaud.plist [Support]
[running] com.fitbit.galileod.plist [Support]
[loaded] com.google.keystone.daemon.plist [Support]
[loaded] com.microsoft.office.licensing.helper.plist [Support]
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[running] com.spotify.webhelper.plist [Support]
User Login Items: ℹ️
iTunesHelper UNKNOWN (missing value)
Microsoft AU Daemon Application (/Applications/Microsoft AutoUpdate.app/Contents/MacOS/Microsoft AU Daemon.app)
Adobe Update Manager UNKNOWN (missing value)
Microsoft Excel Application (/Applications/Microsoft Office 2004/Microsoft Excel)
SpeechSynthesisServer Application (/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks /SpeechSynthesis.framework/Versions/A/SpeechSynthesisServer.app)
Inspiration 8 Application (/Applications/Inspiration 8/Inspiration 8.app)
Fitbit Connect Menubar Helper Application (/Applications/Fitbit Connect.app/Contents/MacOS/Fitbit Connect Menubar Helper.app)
apple-scc-20141117-121931 UNKNOWN (missing value)
HP Scheduler Application (/Library/Application Support/Hewlett-Packard/Software Update/HP Scheduler.app)
HP Product Research Application (/Library/Application Support/Hewlett-Packard/Customer Participation/HP Product Research.app)
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Flip4Mac WMV Plugin: Version: 2.1.0.33 [Support]
FlashPlayer-10.6: Version: 15.0.0.246 - SDK 10.6 [Support]
Default Browser: Version: 600 - SDK 10.10
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AdobePDFViewer: Version: 8.1.0 [Support]
o1dbrowserplugin: Version: 5.38.6.0 - SDK 10.8 [Support]
QuickTime Plugin: Version: 7.7.3
SharePointBrowserPlugin: Version: 14.1.0 [Support]
googletalkbrowserplugin: Version: 5.38.6.0 - SDK 10.8 [Support]
iPhotoPhotocast: Version: 7.0 - SDK 10.7
User internet Plug-ins: ℹ️
Unity Player: Version: UnityPlayer version 1.6.2 [Support]
3rd Party Preference Panes: ℹ️
Flash Player [Support]
Flip4Mac WMV [Support]
Logitech Control Center [Support]
Time Machine: ℹ️
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Auto backup: YES
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Destinations:
Data [Network]
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Total number of backups: 59
Oldest backup: 2014-03-12 12:51:24 +0000
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      0% Fitbit Connect Menubar Helper
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Top Processes by Memory: ℹ️
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172 MB Mail
64 MB Safari
60 MB mds
52 MB com.apple.WebKit.WebContent
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49 MB Free RAM
832 MB Active RAM
796 MB Inactive RAM
1.41 GB Wired RAM
45.93 GB Page-ins
1.06 GB Page-outs
Diagnostics Information: ℹ️

Macintosh HD (disk1) / : 498.88 GB (50.81 GB free)
You have only about 10 percent free drive space left. 50gB is enough to run the computer but, if it gets much smaller, that can slow how Virtual Memory (VM) works as the system has to more carefully search the remaining space for qualified blocks to which to write data.
Adding RAM will reduce the writes-to-disk by VM but you should probably consider a little holiday disk cleaning of stuff you no longer use.
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apple-scc-20141117-121931 UNKNOWN (missing value)
HP Scheduler Application (/Library/Application Support/Hewlett-Packard/Software Update/HP Scheduler.app)
HP Product Research Application (/Library/Application Support/Hewlett-Packard/Customer Participation/HP Product Research.app)
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