I am affraid

Why? what stops you from doing then? I think you should work on that fear. If you remained afraid to try new things, you'll be missing out a lot in your life. It's like depriving yourself to grow, to learn, to be developed. I'm not saying that you should be aggresive at all times. when you do something, decide carefully if its worth the effort. But if you believe you can learn from it and it is necessary, then do it! =)