As we age we become more confident in what we believe and why we believe it. Our values become more entrenched and we take ownership of them instead of being blown this way and that by the loudest voices. Values are intrinsic to who we are, but they can be divisive too - I've seen people become dogmatic in their beliefs to the exclusion of remembering to love others. I've also seen people compromise their values to move ahead in a job or to become what they think is important.
Both types of people once had a place in my life at some time but not any more. Now days I need to surround myself with people who are positive and proactive and who take ownership of their feelings and who care about the people around them. I don't want to make excuses for the poor behaviour of friends - they should know better by now and if they choose to behave in a way that compromises my beliefs then it's time to move on.
Time has a habit of weeding out the true friends from the Johnnie-come-latelies. I've been learning that I can keep the memories of past friendships, and then choose to move on. I need to be true to my own moral compass and values and the good friends that keep me honest and authentic. Surprisingly, there are still a lot of those people around if I keep my eyes and mind open.