Kindness and forgiveness are great starting points. Not just to others, but to yourself as well. Forgiving yourself is absolutely necessary. Without it, you continue to add fertiliser to the existing bad seeds in your mind, by being hard on yourself, as I once did. Self-forgiveness and kindness weaken the strength of those seeds. Healthier ones replace them and grow stronger in time, overshadowing the old seeds until there is nothing left to sustain their growth.