Does anyone's opinion about you really matter?
Or is your opinion about yourself and your situation way more important?
Are these people who have an opinion about you paying your bills?
If the answer to that last one is a resounding "no" then why even bother listening to them???
One of the books that I have listened to that has helped me along my journey is "As a Man Thinketh" by James Allen. It teaches that to have the life you desire you must learn to control your thoughts or to be more mindful of what you're thinking... or, how Oprah once said it..."live in the present moment".
You create your reality
Perspective is relative
You have a choice
I repeat, you give an order to God when you focus on something long enough--whether or not it's something wanted. So maybe your goal is to lose weight but you keep focusing on how fat you perceive yourself to be. You will continue to be fat because this is what you're focusing on. However, if you shift your thinking to envisioning yourself at your goal weight you will start to see your reality change to what you envisioned.
So you have to be very diligent about only thinking about what you want--and not what you don't want. But I think Allen explains it better than I can in this audio book. Watch it here:
https://youtu.be/ivx3iZhQ9k0