You might want to check out Mindfulness Based Stress Reduction (MBSR). I just started doing that about 4 or 5 months ago. It's made a big difference in my awareness of my state of mind.
I asked my therapist about "mindfulness" because it seems to be the latest buzzword in business and it keeps coming up at work. She suggested that I read "Full Catastrophe Living" by Jon Kabat-Zinn. It is a hard read (because it is so information dense), but it was worth it. I also downloaded the CD's with it. There are other books, but I have not read any others yet, so I can't say much about them.
I have been trying to keep up practicing daily for at least 20 min.
I prefer 45 min, but I'll take 15 min if that's all I can get. Thing is, I try to do it every single day. I have found I need to. On days that I don't, I'm much more reactive to situations that come up.
It's also helping me with therapy, and it's a bonus that my therapist is one who also practices meditation. So I have her for questions and encouragement.
I was able to find a local group that meets once a week, and they are MBSR based.
It is working for me and my H has also seen the changes in me since I've started.

I hope you find what works for you.