Replace your screen with this: http://www.amazon.com/gp/product/B00JETJXHY/
I did it the other day and it took me less than an hour though I would recommend having a better set of tools. The tools included would work but it will be easier with better tools. There are other cheaper screens out there but this is a good compromise. By doing this you'll instantly raise the value of your phone
If you want to do it yourself, please follow iFixIt's instructions.