Look For the Good Not the Bad
Stop being negative! It's simple instead of focusing on the things that you're not happy with focus on the things you are satisfied with. You may not like your height, so focus on your amazing muscles. Look for the positive within every aspect. You may not like being short but at least you can wear heels and not tower over everyone. Find a positive to your negative and it will make life a lot easier.
You can apply this aspect to your daily life as well. Bummer - you have to stay up late to study for a test; soon you will have that degree and land the job of your dreams. Focus on the positivity!