It’s really good advice. The derivation of the word seems to indicate that it means to feel sorrow or regret. However, there are places in literature where the Greek word metanoeite has been translated to English as repent. However, metanoeite indicates a change in one’s mind or purpose.
So, the advice is to change the way you think. I suppose if you feel sorry or regretful about a particular mindset, it would indicate that you intend to change the way you think. But, in general, the word repent doesn’t carry that connotation.
Change your mindset. Think success, not failure. Think good, not bad. Think positive, not negative. Then let your actions follow your thoughts.
Look at me being all positive, talking like someone can hear me…and cares.