Buddhist believe that life is suffering. That we generate that suffering within our self with judgements of ourselves and others. I am better looking, I am ugly, I want more or I want what they have. You get the gist; self inflating or self deprecation.
How do we end suffering? Through the practice of mindfulness , achieved through meditation, and correct thinking. Learn to truly understand that our perceptions are illusion. That our belief that we are separate from each other and the universe is illusion. That in reality everything is one.