There is more to this than first glance, you need to be nicer and more honorable to your friends than you are your enemies. It's very easy to fuck over your friends because they're so close and you're around them every day and you rarely get to meet the enemy so you may want to not hurt his feelings or whatever, but as a total mindset, you absolutely need to never extend kindness to your enemies beyond what you do to your friends on every level of interaction. Many people slip on this