The older you get, the less seriously you take criticism. I've gotten to a point now where I ignore it completely. It's just not relevant to me anymore.
Over time I began to realize that the level of cinema criticism in the last part of XX century in the United States was pretty low. The institution itself is not what it's supposed to be, and I realized that I didn't need to take that seriously.
You have to have a thick enough skin to cope with the criticism. I'm very self-critical and I have a lot of friends that I trust who are film directors and writers and people in my profession.