Don't stick with something that makes you unhappy for the benefit of other people.....recognise when you are unhappy, being drained, learn to spot the signs....and realise when someone/something else is bad for you.
Acknowledge what really makes you happy and who you have the best belly laughs with - do more of this..turn your favourite tunes up loud and sing/dance away to them,, who cares! (well don't wake anyone up ha)
Take time away, just to be by yourself and reflect it's important.
Reflect on yourself... it's ok to be wrong and say sorry, try to work out repetitive cycles of destructive behaviour and figure out how to break the chain
Plan fun adventures / travel / book that trip to Lapland / go wild swimming / join the evening art course/ have a day off to stay in bed doing nothing all day
Start going to the gym yesterday, stick to it! Take vitamins now
Ring the Dr's /seek help if you are worried about something, don't leave it too late or put it off....you will know really if somethings not right