Giorgios,
While I sympathise with Koffee et al who think you're a little o.c., I see it from your point of view as well ... and if it took this man to change (and save) your life, then so be it. Many caught up in depression didn't have a role model to save them.
If doing something permanent like this to keep you constantly aware of which direction you should be steering your life is what you need, then more power to you. Just remember that you're an individual, and ultimately you need to find the inner strength to motivate yourself, not to rely on external factors to get you out of bed each day.
Hope all goes well for you.
Gary