I have a MacBook Pro. It is running OS X Yosemite. For some reason whenever I try to open or use an application, it stops responding. The spinning beachball comes up and I have to force quit. However when I boot into safe mode, the applications work fine. Why is this happening? How do I make my applications work in normal boot? Please give me a solution. Thanks in advance!
I have 480GB of available storage space.

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