My Computer has been freezing all of a sudden in the last week and i have to keep doing force shut downs!!!

Question

My dad usually helps me fix this stuff, well go figure he is on vacation and a day after he leaves, the computer starts giving me problems. im so angry with it right now i might throw it off my balcony...
The loading icon randomly starts spinning sometimes and wont stop, requiring me to do force shut downs in order to make the computer usable again.  sometimes it does it right away, sometimes it does it after ive been using the computer for a bit... for a while i can switch windows until it completely freezes.  i cant click anything, cant force quit any programs or anything, and i the spinning beachball never goes away!  the computer isn't hot either when it crashes! SO FRUSTRATING! it was perfectly fine until the last week or so. im anything but a computer genious, but i ran the disc utility and it says the drives are fine.  things ive done in the last week.  done the updates that the app store was pestering me with, updated corel painter 12 with the most current patches because that started randomly crashing. well now painter works and its the computer crashing X.x
I dont have extensions on my safari aside from adblock. and i only have 2 apps downloaded and corel painter is the only software on the mac side of the computer.  parallels has an adobe suite on it but Corel is the only thing that has gone through changes recently... 
i dont know what to do... i need to work on projects and the computer keeps making me lose progress and keeps giving me frustration. please help if you can...
I've never used the forums before so i don't know the right category, but if its wrong im sorry.  if you can just move it into the right one...

Answer 1

Back up all data immediately, if you haven't already done it.
If you have more than one user account, these instructions must be carried out as an administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
Step 1
Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Enter "BOOT_TIME" (without the quotes) in the search box. Note the timestamps of those log messages, which refer to the times when the system was booted. Now clear the search box and scroll back in the log to the last boot time after  you had the problem. Select the messages logged before the boot, while the system was unresponsive or was failing to shut down. Copy them to the Clipboard (command-C). Paste into a reply to this message (command-V). Please include the BOOT_TIME message at the end of the log extract.
If there are runs of repeated messages, post only one example of each. Don’t post many repetitions of the same message.
When posting a log extract, be selective. In most cases, a few dozen lines are more than enough.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Important: Some private information, such as your name, may appear in the log. Anonymize before posting.
Step 2
Still in Console, look under System Diagnostic Reports for crash or panic logs, and post the entire contents of the most recent one, if any. In the interest of privacy, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if present (it may not be.) Please don’t post shutdownStall, spin, or hang logs — they're very long and not helpful.