People have trained you
to care about how they think,
because it's important to
most people who are
for you to
create conditions they
can live with.
You know who these people are, the ones that you are always trying to impress, the ones that trained you to keep their needs in the forefront at all times. They may be a parent, a partner, a sibling, your children, your best friend, your boss, it doesn't matter who they are, they have a firm grasp on your emotions.
There is something about you that makes people choose you to mold - you may be cooperative or fun, a people pleaser or maybe you just have something they want - they see a trait in you that they admire and they want to have it too. Whatever the reason, you have been chosen..... your job now is to care about how they think and to support their opinions, at all times.
Some people will only love you as much as they can use you. Their loyalty ends where the benefits stop. You have been chosen ONLY for what you can do for him/her. It usually takes a simple dispute to see the relationship slowly dissolve. Spend your time on those that love you unconditionally, don't waste it on those that only love you when the conditions are right for them.
You only need to care about what YOU think, don't waste your time trying to create conditions for someone else's thoughts.