Something to Excel in!

I couldn't really sleep last night as I was reflecting on myself. I saw that I wasted loads of time doing meaningless things; things like surfing the net for 4-5 hours a day, watching TV and Facebooking. I seem to have thrown it all away, and I think God is making me re-think about the concept of time. I'm 23 this year, and I have grown out of my teenage years, I really want to be good at something. I want to be good not because of pride or ego problems, it's just that between now and till the time I go back to Heaven I still have another 40-50 years, I don't want to live mundanely. I want to look back in retrospect and say: "Hey, praise God, I was good with this thing! I didn't waste my life away!"
 
I did an analysis, and I find that I was really good at one thing at one point of my life. I was really good with guitars! I even got a Grade 8 certification from Yamaha Music School, but I didn't know why I stopped. I guess, I was probably too bored and I wanted to do more sports. I was never good at martial arts; I guess I forced myself to engage in it, probably because I felt weak. I just couldn't find an art suitable for me, till recently, when I found out about a Filipino art call Arnis (stick fighting).
 
Personally, I think there are 2 things which a man should do regardless of what they are good at; 1) Fitness: I think a man should train up for fitness, either through the gym or through circuit training. A man has to be fit to take care of himself and the family, a weak man is incomplete. 2) Self-defence: Like I said earlier, a man must take care of his family, and also to protect them. A man who can't fight is also incomplete! I heard a Pastor say that Jesus was actually Muscular! He was a carpenter and in those days, carpenters had to manoeuvre heavy items.
 
So, Fitness and Self-defence are the two things I will do till the day I die. The thing is, I still haven’t found the thing I can achieve greatness in. I may do those two things which I think all men should do, but I may not be extremely proficient in it. I want to know what I can do well and invest my time in it. Though people may say the opposite, that find what I like then invest time in it. To me, if I can’t excel in it, why should I even put time into it?
 
I see a lot of people taking up hobbies which they will probably never be good at, if they have the time, money and interest then fair enough. I know I am going to have time and money when I have God, but I know that He has put in me a certain talent which when developed will bring me a lot of joy.
 
I started contemplating about guitars again; I passed my Ibanez Prestige worth 1.8K to Matthias. I may want to sell it to him and use the money to build a custom Stratocaster and start playing again. Oh well, I need to think more clearly with what I want as I have not much time to waste.
 
Do help me pray for wisdom to see! =)