Meditation and other aspects of Buddhist practice can be difficult. According to the Buddha, it's useful to pay attention to exactly what's going on when we're feeling challenged. Any obstacle can be characterized as one of five hindrances: 1) Sense desire; 2) ill-will; 3) sloth-and-torpor; 4) restlessness-and-worry, or 5) uncertainty (or skeptical doubt). By identifying our hindrance, we get a better sense of what caused it to arise and how we can best overcome it.