I have the opposite problem to most people, of having too many friends. And the number is ever-growing. Wherever I go - job, hobby, school - I pick up more friends. It's wonderful in that I am never lonely and I feel very loved. It is difficult though too because I sometimes feel overwhelmed and that I am not able to be a good friend myself. I have so many invitations, emails, texts etc that I can't keep up. I adore…
It's absolutely lovely but exhausting. I too feel overwhelmed by texts, invites and the like and am trying to figure out how to handle this without compromising myself too much (life is tough right now and I feel like I need an increasing amount of time on my own right now). Honesty about it is the approach I've been taking - I try to be the best friend I can to all of those closest to me, but bear in mind that I am also the most important friend I have.
FWIW, I'm exactly with you on your points 1, 2 (replace calm with excitable sometimes though!) and 3.