Establish a Team Mindset
Any relationship is about building a team. Even though teammates can butt heads and compete with one another, they share a goal. This is true off the sports field as well: considering your spouse, coworkers, etc. as team members will help keep you thinking in terms of developing the team towards a goal.
Teammates also help each other improve: when criticism comes from a place of making the whole team better, people are a lot more receptive. This has to go both ways, however, and you should take critiques from your teammates as well.
Teammates also help each other improve: when criticism comes from a place of making the whole team better, people are a lot more receptive. This has to go both ways, however, and you should take critiques from your teammates as well.