Life is like a mirror. Smile at it and it smiles back at you.
If you realized how powerful your thoughts are, you would never think a negative thought. They can be a powerful influence for good when they're on the positive side, and they can and do make you physically ill when they're on the negative side. I don't eat junk foods and I don't think junk thoughts! Let me tell you, junk thoughts can destroy you even more quickly than junk food. Junk thoughts are something to be wary of.
We must be able to appreciate and enjoy the places where we tarry and yet pass on without anguish when we are called elsewhere. In our spiritual development we are often required to pull up roots many times and to close many chapters in our lives until we are no longer attached to any material thing and can love all people without any attachment to them.