Project management is an acquired skill, one that doesn’t come over night and is certainly not for everyone. As you are joining new project teams it is essential to do so with an open mind without any prejudices or preconceived notions.
Listen to all ideas, think about them and consider them seriously. Learn from past collective experience, but leave any disagreements where they belong, in the past. Move forward with your eyes on the success of that project and manage project expectations along the way. You can never communicate enough to all those involved to ensure that everyone understands what their contributions are and what the final outcome needs to be.
Work together, collaborate and achieve success.