Maybe there is a movie that wanted to see but kept putting it off, or favorite music, book, computer game (but it should not be very depressed). It helps me, does not clean completely, but a little switches. Usually it seems that will not help, but then gradually in dive different reality and feel a little better.
Also, Strangely, but coffee helps. Аlso a sense of physical pain, but here cautiously.
In the most severe case, I use one tablet of phenazepam (tranquilizer).
Hope you will be feel better.
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Sorry for my English, I can not learn a non-native language, so use the program for translation