Perhaps, but training your ability to respond consciously to your desire to phase or not is still a good idea. I had to do much the same when I was your age. Teaching myself the structure of the human mind, and human memories, so that I wouldn't inadvertently do something I hadn't meant to when inside another's mind. You might also benefit from increasing your physical endurance, teaching yourself to hold your breath for as long as possible.

[He gestures at the rattan stick strapped to the back of his chair.]

Though it's important to refine the use of our abilities through repeated and creative use, there are nevertheless other ways we can train ourselves, and I believe it's important we do so.