IMO, "friends" who view you talking about your horse as bragging, are simply jealous, petty, and do not know how to be happy for anyone except themselves. They are not really your friends. There is an old saying that if you can count five true friends by the time you die, you are lucky indeed. I have two true friends. The rest are just acquaintances that I enjoy being around. That said, I would never count on those acquaintances to ever do me any favors especially in a pinch. My two true friends would bend over backwards to help me out, no matter what. Those are the friends whose opinions should matter to you. The rest of your "friends" will come and go through out your life. Don't stress about their pettiness.
Strength is not defined by physical ability. It is determined by your actions and the compassion of your soul.