Know and watch your heart. It's pure but emotions come to colour it. So let your mind be like a tightly woven net to catch emotions and feelings that come, and investigate them before you react.
Ajahn ChahI am like a tree in a forest. Birds come to the tree, they sit on its branches and eat its fruits. To the birds, the fruit may be sweet or sour or whatever. The birds say sweet or they say sour, but from the tree's point of view, this is just the chattering of birds.
Ajahn ChahIf you want to understand suffering you must look into the situation at hand. The teachings say that wherever a problem arises it must be settled right there. Where suffering lies is right where non-suffering will arise, it ceases at the place where it arises. If suffering arises you must contemplate right there, you don't have to run away. You should settle the issue right there. One who runs away from suffering out of fear is the most foolish person of all. He will simply increases his stupidity endlessly.
Ajahn Chah