I've tried quite a few things and the most useful thing for me has been https://www.headspace.com/ . It's "daily" guided meditation (that after not too long is barely guided). The narrator's voice is really good, not too hippie, very calming. Everything is pleasant and well-designed.

This was also pretty good, if you'd rather read a book: http://www.amazon.com/Search-Inside-Yourself-Unexpected-Achi...