You do need special scissors to cut your hair. They need to be sharp as well. You will need to make sure that you keep them sharp as well.
Hair cutting scissors are different because they make scissors for texturing, cutting, thinning, and even styling. You need to know which scissors you need for the purpose you are using them
Dull scissors can cause split ends. You need to make sure that you keep them sharp if you own a pair, or get your hair trimmed every now and them by a pro.
You do need special scissors to cut your hair. You need to make sure that you buy pro scissors that are for cutting hair, and not other special functions.