Answer:
well for starters if someone is being obnoxious then they might not be a good friend
Step-by-step explanation:
my advice is to take some time to reflect on what makes that person how they are and then find something in the middle that will help them relax and become less you know "obnoxious" if not find common ground with them or even if necessary find ways to help them or ask about there days or something
most common obnoxious people have either had a bad day or are feeling low and maybe even a little insecure and or alone so try to make them smile and help them to become a better person