I want to stop feeling miserable all the time. how does anon accomplish such things?
sounds cliche but letting go of desirs that you cannot work towards.
eventuall you just feel empty
There's a good chance it could be physiologically-based.
Are you getting enough sleep every night? Are you keeping masturbation down to something you only do every other/few days? Are you eating healthy? Are you getting enough fresh air and sunlight outside? Are you getting at least 30 minutes of exercise (walking) everyday?
If you get these things out of the way and still feel sad then its ultimately left up to you to determine why you feel the way you do and how you can fix it. Deep depression makes it difficult to try and improve your lifestyle in the ways I described above, but it might be necessary to make yourself feel better. One step at a time.