Do not assume that just because you’re a whole 1, 2, 3 or even 5 years older that you are better, by no means do you possess a higher level of maturity. You’re not smart based on age, it doesn’t work like that. And if you think you are, you sound like a dumbass, just saying. We gain knowledge though our personal experiences in life, not necessarily with age.
It’s okay to share your experiences with those around you, it’s okay to tell them your opinion, and it’s most definitely okay to believe you’re right. It’s all in the way you say it. Don’t go around talking down to people simply because you’re a few years older. Don’t believe you are absolutely 100% correct solely on the fact that you’re ‘older’ and supposedly ‘wiser.’ It’s rude, ignorant and you’re making it hard for others to respect you.