I think this truly applies to people. Sometimes you have to take a step back and analyze who in your life is healthy for you, and who is bringing you down. Don't be anchored down by people who are taking you away from all that you can accomplish.
Caring for, and loving ourselves is the most important thing we can do. Our vibrations create our reality, so vibrate love! Self-criticism creates patterns of negativity, which crates that in our lives too.. Law of Attraction.