You can't take away a habitual negative self thoughts without replacing them with something else, so having a few in your toolbox to pull out in a pinch can be super handy.
Read through these, and choose 2-3 that stand out to you. Then write them down, and keep them handy to have throughout the day. Say them to yourself 3+ times per day.

The Power of Repetition
Changing your internal dialogue takes practice and repetition. The more you do this, the more you will begin to believe it, and think it by default. Over time, you’ll start to notice a shift in your thinking patterns, and your self-talk will become more positive and supportive.


