I've continued to think about this. Are you able to tolerate adverse conditions for a while, keeping the end goal in mind? If so, you might be able to psych yourself up about taking the stressful job.

You'd probably need to make a list of affirmations to draw on as you work at this job. Remind yourself of the end goal, that this stress won't be forever, that you are learning and will make mistakes, that you'll feel ill at ease while you learn the ropes of that particular company, etc.

Validate your working there by noting the increased financial value too.