Take a serious break and re-examine your game. Learning limit is NOT A BAD THING. Poker theory from your NL game can help you with limit and for what it's worth, switching between the two has helped me a lot when trying to figure out my own play. NL isn't for everyone.

Also, don't lie to your parents or your friends about playing; be honest and explain yourself. If you get caught playing and depositing money after you've already been told no, you'll be in deep [censored] anyway and it will hurt your relationship with your parents