Trust life, even if you cannot trust people. For human nature is unreliable, but life itself is ruled by immutable law. Right action leads always, in the end, to victory.
Happiness is reverence for all life.
Self-acceptance comes from meeting life's challenges vigorously. Don't numb yourself to your trials and difficulties, nor build mental walls to exclude pain from your life. You will find peace not by trying to escape your problems, but by confronting them courageously. You will find peace not in denial, but in victory.
As you begin this day, tell yourself, Today I am incarnated anew! I am released from the hypnosis of my old habits and mistakes! Everything that I have long dreamed of doing I will accomplish in this, my new life.
That's what life is for, to find that joy in yourself.