When you distance yourself from a close friend it creates few scenerios that actually can be solved. First, you experience missing, on both accounts. Second, someone wants some answers, and it usually is the one left behind.
I am assuming you haven't told your friends that you are seeking change in your life away from 'negative.' I do believe that not being straight with them weighs heavy on you, hence your feeling of being down.
There is something beautiful in sharing your concerns with your friends, being authentic about what you want. And I am more than 100% sure that once you do, you will not only feel 20 pounds lighter but maybe even reform your friendships to a new level that you may never have experienced with them before. And, if that does not work out, you must know - people come and go and they also return when you have more in common, but it doesn't mean you don't love each other, it only means that you are on different paths in life now and they may cross again in the future. Best of luck to you and your family.