YES, YOU CAN
Most people never reach their potentials because they lack sufficient motivation to make an effort. Are there things you have failed to do because you thought you stood no chance of winning? Why not give it a try today?
I read of a story of a grandma who heard dreadful scream and ran out of the house. There pinned down under a big family car was her 14-year old grandson done in by a rogue car Jack! Death seemed certain unless help came fast. Strength came to grandma from only-God-knows-where. Wonders of wonders, the 63 year old lifted and shoved the heavy car aside and succeeded in retrieving the badly bruised boy. News went to town. Shortly afterwards, a journalist asked the woman if she knew she could lift a car before the incident. The answer was "No, of course." "But", she added, "if you too saw your son dying before your very eyes, I guess you would muster strength to lift a car to rescue him."
Provided that Philippians 4:13 says "you can do all things through Christ who strengthens you."
You can, if only you would. If you say you can, you are right and if you say you can't you are also right but why not give it a try today and make a positive decision.