I don't believe that someone can not change,but just like you mentioned it's a thing of the mind, determination will help the person to seek support and learn from other people…
I don't just stop because of one time failure even twice, I research more and rearrange myself to take off the second time, stopping doesn't stop failure unless you will never…
If I can learn how to say no and remain silent in some chaotic situations I will be very happy infact I will celebrate it because not saying no has harmed me a lot, am happy you…