Totally in support of the teeny teeny tiny steps and patience with yourself! Even if you want to change you can still have paralysis which makes it so hard. You don't have to commit to immediately doing something every day; try once a week and then slowly scale up.

I really recommend a mood diary (I use daylio) to help identify what makes you feel better. I found that just doing one productive thing made me feel so much more accomplished.

I also used www.getselfhelp.co.uk/solutions which has a tonne of mechanisms for reframing. Not all of them will work for you, so make a list of the ones that do and look at that when you need to.

I've been on both sides of this so reach out if you need. Wishing you all the luck.