I find this question confounding. People are not a Type, they identify with a type because they most closely resonate with that particular type. You are what comes before the type; you are a precedence. A banana needs to be long, yellow, mushy and typically grow in the tropics before it can be identified as a banana. The type is not what makes you. The type was conceived when someone, in this case Carl Jung, started to detail human behaviour to form a few overarching descriptors that can illustrate multiple personas; to generalize the human psyche. In this case, INFP is just a descriptor for a group of people who happen to embody a particular set of traits.
I've observed that a ton of people conflate their own sense of self with some sort of paradigm even outside of the MBTI community. You see this in mainstream astrology - hell, this could even be tied to the issue of race, and the general sense of superiority/inferiority/congeniality spawning from the perception of "out group" and "in group" (and life is riddled with groups). I think it ties to the most human need of wanting to belong, and be validated. There is nothing wrong with that, but there are wiser ways to go about fulfilling that need.
I think most posters here have stated helpful answers, which was also the most obvious one. I assume from your question that you're having a hard time trying to like yourself (and not that you want to tower over others in pride)? There's a first step: not attaching your sense of worth to a "concept", or persona that has negative or positive connotations tied to it as determined by the public. You have inherent self worth that can be distinguished from the sense of worth we receive from the "outer". But this can only be found by yourself, in yourself.