Inflict sweet pain on yourself and work your soft tissue: use a foam roller. I personally use a small one as I have to travel with it and I live in a tiny co-op with my family. I think that a long roller is easier to use though.

I find the roller to be the next best thing to deep tissue massage and much cheaper (though no substitute!).

How do you use it? Well, Eric Cressey (strength&conditioning genius) has a great video up on youtube. I will simply link to it as I haven't figured out how to embed video yet (someone help!).