Write yourself an uplifting sentence that you can read when it's hard - place it somewhere visible, or in your phone. Read it every time you feel overwhelmed or despairing.

When you face a challenge - don't ask "Why is this happening to me?" but rather ask "What can I learn from this?" Write yourself one insight at the end of each day.

Find one person in your surroundings who is dealing with difficulty - ask them sincerely how they are, and listen without judging or advising. Sometimes a sensitive presence is the strongest solution.