As Elizabeth Gilbert has has mentioned in her book “Eat, Pray, Love“
The emotional attachment that goes along with the thinking. Happy thoughts make me happy, but – whoop! - how quickly I swing again into obsessive worry, blowing the mood; and then it’s the remembrance of an angry moment and I start to get hot and pissed off all over again; and then my mind decides it might be a good time to start feeling sorry for itself, and loneliness follows promptly.
You are, after all, what you think. Your emotions are the slaves of your thoughts, and you are the slave to your emotions.
The other problem with all this swinging through the vines of thoughts is that you are never where you are. You are always digging in the past or poking at the future, but rarely do you rest in this moment.
It’s something like the habit of my dear friend who – whenever she sees a beautiful place – exclaims in near panic, “It’s so beautiful here! I want to come back here someday!” and it takes all of my persuasive powers to try to convince her that she is already here!