Cubed
I've made this resolution to myself at least twice in the past already, but this summer I really will learn the Fridrich Method for solving the Rubik's Cube by heart. (Third time's a charm?) It's been nearly four years since I learned Leyan's layer-by-layer method, and at one point I was able to solve the cube with an average time of about a minute. However, bringing that time down to thirty seconds or less, as is quite possible with Fridrich, is going to take a lot of memorization, practice, and hard thinking. I hope my brain can handle it.