Practice positive self-talk
Practice positive self-talk: Monitor your internal dialogue and replace negative thoughts with positive and growth-oriented affirmations. Instead of saying, "I can't do this," try saying, "I can't do this yet, but I'm learning and improving."
— from Expanding Your Range (Growth/Change/Education/Learning/Habit) · Mindset by Dr. Carol S Dweck
In the book
And here is the freeing part — the fixed mindset is itself just a belief, and you can choose the other one. The whole shift can be carried by one small word: "yet." You do not say "I can't do this." You say "I can't do this yet". Effort stops being a confession of weakness and becomes the very road to mastery. […] The mindset first: you are not finished, your brain is still clay, and the only question is what you will shape it into next. Adopt the growth mindset on purpose. When you hear yourself say "I can't," add the word yet; treat effort as the road to mastery rather than proof you lack talent; read your failures as information about where to push, not verdicts on your worth; and actively seek out the negative feedback most people flee. Be a lifelong learner. Set aside time every single day for it, and never stop, because the day you stop is the day you die mentally; be your own great teacher; learn from the giants who came before you, and love the truth enough to admit when you are wrong. […] Treat your own mind as something you are responsible for growing until the very end — never let a year go by in which you did not get better at something. When you fail, and you will, hear it as instruction and answer it with the word yet. Build the small, daily habits that will quietly carry you on the days your willpower is gone, because in the long run you do not rise to your hopes; you fall to your routines. — Expanding Your Range (Growth/Change/Education/Learning/Habit)