I love Pema Chodron's books and lectures - I think they're more than mindfulness, which Jon Kabat Zinn seems to focus on. I love Pema's ideas on being with one's thoughts and feelings, watching them like clouds moving across the sky and instead of getting "hooked" by them (her words), just being with the fundamental energy of the thoughts/feelings, rather than engaging in them.

She also says that when you're with the thoughts, to just look at them and say to yourself "stay ... stay ... stay". I find it far easier to do when sitting alone quietly at home than during the day when I'm busy with things, but I really resonate with the idea of not engaging in them, just allowing them to be without judgment or resistance.