Painting is hard, and painting a subject that gives you trouble or moves you out of your comfort zone is frustrating and hard. It's easier to go outside, find a favorite spot and paint what you're comfortable painting. Painting what you're not good at is almost paintful and a real shot to the ego. But in the long run it's really helpful -- no pain, no gain. It's helpful to study how other artists see the same subject, how they simplify shapes and color, use thick or their paint. Then approaching the subject one step at a time. Painting a series of pieces that focus on value, then a series that focuses on temperature, or edges, working on one aspect of painting at a time.