One thing at a time. Know the problem. Learn to listen. Learn to ask. Distinguish sense from nonsense. Accept change as inevitable. Say it simple. Be calme. How to work better, ten simple things that make a huge difference.
If I'm a sarcastic asshole when I talk to you it's either because I really like you and feel comfortable teasing you - Or I really hate you and don't care if you know it - Good luck figuring out which one