Sol, one of the things that kept me sane in the hellish last years of my marriage was running. Sometimes I would go out to run with no energy and fussing about my crappy life but when I was finished I would be counting all the blessings in my life! Running (and any other physical exercise) really does work if you approach it slowly and by respecting where you're at physically. You sound like you're approaching it in the right way. Btw, make sure you've got decent shoes. I couldn't believe the shoes I'd see people running in from flip flops (I'm not kidding) to loafers! It's a sure way to kill your feet and legs if you don't invest in a good pair of runners. Good luck with it!
