Given the emotion anger and the tweet "Focus on yourself. Don't let other's love define you when you're happy and don't let it make you bitter if you get hurt.", classify the intensity of the emotion displayed in the tweet. The classification options are: 0: no anger can be inferred, 1: low amount of anger can be inferred, 2: moderate amount of anger can be inferred, 3: high amount of anger can be inferred.
0: no anger can be inferred