Before you speak, listen.
And listen really well.
Then speak according to the demand of the moment.
You can remain silent if it is appropriate or as necessary.
You don't need to speak if you don't have something worth to speak of.
You don't have to speak because you feel that you have to speak.
But you need to speak if you know that you need to.
When you listen, listen as if it's the only thing that matter to you in that moment.
When you speak, say the words out clearly and loud enough so that listener will understand what you are meaning to say.
When you want to help someone, be very gentle to let your voice empower them.
People may talk about you and themselves.
You don't have to know and care about what people are saying about you.
But you must know and care about what you are saying to yourself.
You may do this and they may think that.
No. It's not about what you do or what they think.
It's about your intention.
Good intention is all you need.
You might be wise and you could be correct. Other people may make mistake at any particular time. Do NOT correct their mistake. Do not even tell them that they did.
As you see people make the mistake, your immediate natural response could be to want to correct them right away. — Do not do that!
Unless they are your students and you are their teacher, or they work under you, or they are under your supervision, do not correct people right away.
If they are, then you should correct them in a proper manner. Correct them properly by acknowledging and taking care of their feelings, and showing or telling them how to do it right next time.
Your correction should motivate them, and never demotivate them in any way.
People are different.
They may be a bit or very much different from you.
Embrace those differences.
Realize that their differences are actually blessings for you, not a curse.
You usually think of other people before you think of you.
You think about how other people should act or behave in a certain way that you want.
You want them to do, have and become according to what you desire or demand for them,
Yet you almost always fail to realize that those things that you want for others to do, have and become are those that you should do, have and become for yourselves.