The FIRST thing you must do,is to STOP the 'pleasing' behavior.
I did that for years and got what you got,treated with disdain and
disrespect. The behavior comes from when you were a child and
tried to get love+affection by pleasing parents; then it is TRANSFERRED onto society at large as surrogates of parents.
Don't look for people to like you,instead,look for them to RESPECT you--the liking can come later. Burn the following into your brain: THERE CAN BE NO RELATIONSHIP (EVEN
IF ITS 2min. in store) without MUTUAL RESPECT! Start to be
a little more reserved. When out and about,see how many eye-
contacts you can get,this alone can raise esteem. Speaking of
which,get some titles on self-esteem by the recognized expert on
subject, Nathaniel Branden. I recommend "Honoring The Self",
and "The Six Pillars of Self-Esteem". While you are at it,look for
some assertiveness titles too (this is ESSENTIAL). And please
accept the fact that there are some sh...ty people about,who will
walk all over you if you let them. Start by saying, "Sorry,that's
not acceptable to me." I know that may be too big a jump for you,so maybe you could get a book on assertiveness first.
Learning that skill will change your life,I promise you.
You deserve better.
Deepest Respect,
BLUEDOVE