Your first 10,000 photographs are your worst" Henri Cartier-Bresson
Do you know how many photos you have taken up until now? You will have to take thousands of pictures to reach a point where you can begin to evaluate them objectively. Looking upon your photos as if you were looking at them through someone elses eyes is a good way to give yourself constructive criticism. Comparing your first photos with your most recent, do you see improvement? Do you remember how you loved some of your first photos do you still love them or are they now not so good anymore?