Taking time with the process is, I think, essential. And if possible taking a break from your present work if you’re finding it unbearably stressful.

Work out what you love doing.

Work out what in your job is stressful – is it something about your attitude to the work and how you want to do it?
or is it that you’ve got stress merchants for co-workers and bosses?

How much money, absolute minimum do you need to live? Could you get a less stressful job, earn less, but enjoy yourself more? (This is difficult because other people, like parents, will say stuff like why are you wasting your degree etc?) But I reckon that even if you do take a step backwards, it can often be something that realigns what you’re doing, and you end up in a much better position, financially and personally eventually. It’s just that it can take time for that to happen.