When you eat an apple, what senses are involved throughout your body, and how are they important?
(this is psychology. and it has do with the different senses and the more complex senses)

i can't answer your question in very sad situation.

but if your situation is very bad, then you can find happiness by thinking about your past that has full of happiness.

or you should do meditation for some time to get rid off from that bad situation.

you! go to the gym or i will kick you out of here to the gym