I can't spend money!? Haha plz help?

I know this may sound ridiculous but I just can't get myself to spend money.. Anyways I'm 13 and I have around 3000 dollars! That I can spend... I haven't spent more than probably 60 dollars since i was 7 years old and I have worked all summer long at a golfcoarse for the. Last couple years and mowed lawns etc.. Now I am looking to buy a simple game costing 35 dollars and just that makes me feel really sick inside and even if it's not my money say if I'm at bestbuy with my dad and we are checking out and it comes out to like 300 dollars I feel a knot in my stomach lol and I need to buy a new snowboard soon and i know why I want I just always back out buying it lol... Any help? Thanks haha