When people say "Let it go," what they really mean is "Get over it," and that's not a helpful thing to say. It's not a matter of letting go - you would if you could. Instead of "Let it go," we should probably say "Let it be"; this recognizes that the mind won't let go and the problem may not go away, and it allows you to form a healthier relationship with what's bothering you.
Jon Kabat-ZinnLook at other people and ask yourself if you are really seeing them or just your thoughts about them.... Without knowing it, we are coloring everything, putting our spin on it all.
Jon Kabat-ZinnLiving in a chronic state of unawareness can cause us to miss much of what is most beautiful and meaningful in our lives.
Jon Kabat-Zinn