Behind the Wheels

Why do some small things hurt so bad? It was a simple thing….a ‘friend’ said that he wasn’t confident with me sitting behind the wheel in a rented Toyota Camry. He is not my best friend, but I felt so humiliated that I left the driver’s seat immediately and asked someone else to take it up. As a matter of fact, I could feel my eyes getting moistened and my voice choked! He didn’t want me to feel bad and asked again and again if everything was fine. Nothing was wrong considering the facts - I have never driven alone till date, I hadn’t driven a car in a long time apart from 15 mins yesterday (which was horrible thanks to my lack of practice!). But how will someone learn if he/she is never given the opportunity to learn?! But I guess it had to be done to make sure I left the driver’s seat promptly.
It was nice to see another friend who had learnt driving with me, gained a driver's license after a couple of failed attempts, drive with the same ‘friend’ feeling confident about him.
Yet I felt terrible and had to gulp it all down since my ‘friend’ was not yet so close that I could take the pains to explain my viewpoint to him or let him know that I felt bad.
Why the hell can’t I be good at anything? Why do I always mess up things? Why am I so upset when everything that really matters is in the right place?