No, why not? You’ve never done that? I’ve had plenty of times when I tried to get in shape for a specific date. The problem is that after the event everything goes back to how it was, because there’s no more motivation. Now I’ve decided for myself that I want to always look good, and now it’s not about motivation, it’s about building discipline. There’s a cool app, check reviews here madmuscles.com/review, to make yourself a workout plan, see exercise techniques, get some tips and all that. It helped me get started.