Lyric discussion by Saviolo 

Cover art for Spineless lyrics by Alanis Morissette

The part where she sings:

I feel this, truly proclaimed, will help the curbing of this tendency I know this sharing of shame will ensure that I won't forget myself so easily

Is very confessional. She saying that by laying out her tendency to submit in a relationship and suppress her personality to avoid rocking the boat, that it will help her to not do it. She doesn't want to lose herself and give up who she is or what she wants just to make the other person in the relationship happy, but it seems she's done it in the past.