I keep things too long. I keep them until they rot.
How long do you keep them?
I keep them until they are no longer useful, that's the problem.
Hoarding things is something that is not too uncommon, and it does get in the way. Take some time to throw things out little by little every day. That way it won't seem too much of a burden, and you won't have to deal with inspectors threatening to throw you out of your house.
So I should throw out my temper tantrums and anger?
Yes, that is always a good thing to get rid of. Anything physical or emotional should be dealt with in a timely manner before it infests and builds up in you. You'll feel a new sense of self and be refreshed afterwards.