So due to the nature of where I live, any rides of any significant distance will make me go up a hill. I have a pacific 21sp mtb, and I struggle climbing hills. I'd be lying if I said I was in shape, but I'm not completely out of shape. I'm 16 and about 5'7"/170lbs. Every ride I go on, the hills are always a struggle. Is there any technique that I can use to help, or is it all just a matter of getting back into shape? And I know my bike isn't the best, so I'm also on the hunt for a bike to better suit my needs.