Hi, I have a list of things that help me. I've taken antidepressants and although they've helped at the time, I realise it's probably going to be a long term thing and I'm trying to help myself. Here are my go-to ideas:
Go outside and walk/exercise, even if it's just a trip to the local shop or supermarket. Moving and fresh air are natural mood-lifters.
Be friendly and smile at people when you're out. Sometimes just a quick chat with a checkout person whilst shopping can be uplifting and social contact is important, however small.
Be creative ... make something to sell on eBay, or start a blog, or paint/draw.
Volunteer ... helping others is a natural boost and takes your mind off yourself for a while and gives a sense of purpose.
Pet - I have a dog, who is endlessly happy and forces me to get out and about every day.
Read a really good book - (one of my favourites).
Pamper yourself - even if it's just a bubble bath with candles etc.
Join a group (I haven't managed this yet as I struggle with social anxiety, but I will make myself one day!)
Hope this helps xx