Congrats on the sober time.
How to cop a better attitude? Well, one big step for me was in stopping criticising others for their character defects and turn my defect-detector on myself, so I could start the longer and harder job of becoming willing to change, and then actually taking steps to actually change.
Gratitude is another biggie. I find that for most things I moan about, there is some kernel of gratitude in there that I can choose to focus on instead. It makes more of a difference to my day, and my attitude than I ever thought it could or would. Worth a go if you haven't tried it.
Might be worth having a look (or another look) through the threads about making recovery plans. There's some great ideas in there.
BB
PS Re career changes / job searches. Have you considered volunteering in an area that interests you? It would mean you d get to spend time with others who have a shared interest (rather than the screen gazing 30-somethings), boost your CV, and volunteering is great for our recovery.