Achievement and Belonging
It's been really well established, and should come as no surprise, that belonging is important (Bowlby 1969/1982, 1973). What I'm referring to is the feeling of "being a part of", that you "fit in"; you have a spot at the table, that you're "on the team". Where you fit helps to define who you are. Even at times when the fit feels far from perfect, belonging (or not) allows you the chance of learning more about who you are and who you are not. We all want to belong, yet some