Take a while to just be with an emotion or to just be with a thought and observe them, not become them, but simply to be the witness to them. Don’t resist them, that only energises them and allows them to grow and take control. Simply be the silent witness, after all, our true essence and being, in a conscious state, is the knower.
The real you and I are not our thoughts or emotions, and if we energise them, we start to become them and attaching to them, then we will be them. Thoughts occur on average 60,000 times a day, so it can become draining to energise them all, well impossible to energise all them, but we get dragged along by them into a subconscious state. Thought creates emotion, literally turbulence in the body.
The observer is at peace without becoming the turbulence.