Buddhist teacher Tara Brach in Radical Acceptance writes that we can become "addicted to judging and distrusting ourselves." She advises countering those habits of thought by meeting your anxieties with compassion.
Don't belittle your suffering because you know other people have suffered more or because you think you should have overcome more by now. Be as gentle and soothing as you would with a child. As you would with a child, don't indulge fears by letting them control you, but speak to them with patience, non-judgement, firmness, and love.