I usually try to do some combination of all of the above. Extra bible reading with meditation, a devotional guide, and being intentional about self-denial. I'll admit, this year, I'm kind of a slacker, but I am training for a marathon, and the training is more intense during Lent than it was before. I pray and meditate when I run, so I am doing more of that than normal.
The process of committing to some practice and sticking to it is a good spiritual practice. Self-denial is a great spiritual practice because it helps us develop a humble servant mindset, instead of a self-centered attitude. Remember, one of the fruits of the spirit is "self-control" and self-denial is a path towards that.
What are you doing for Lent? Share in the comments.