Sukasana was really the first pose that I started with, and how uncomfortable I was the first time in yoga class sitting in it and chanting, I could not get comfortable.
It took quite some time and some experimentation with just how much blanket to sit on that helped. Breathing and spending time in it with directing breath to my hips and allowing myself to sit for longer periods was the key. It is not always easy to find the "ease" in a pose but as we continue to practice, experiment with what you are doing and allow yourself to be there for longer periods instead of merely just passing through the pose.