Looking back, I think the time I spent with my friend was not that beneficial value-wise. He and the others were smokers. I was not. I ended up inhaling bad vibes in the process. I felt that I was not giving myself the chance to optimize my friendship with them. My time and energy were being spent on trivial issues. Something was missing. I was not wholeheartedly being a friend to myself.
Did I deprive myself more of the wholeheartedness? Of course, I ended them all. I simply changed mobile phone number.
This experience reminds me of this Bible passage:
1 Thessalonians 5:23
May God himself, the God of peace, make you pure, belonging only to him. May your whole self -- spirit, soul, and body -- be kept safe and without fault when our Lord Jesus Christ comes.