Learning from others- How effective is that?

We are being given a lot of advice by many, but we don't follow all, do we?

Because we tend to question the effectiveness of it. In fact, we follow it only when the ones who are teaching are themselves following it. A lot of things we learn are by seeing others; we inculcate a lot of them when we see their outcome of it. So, this process of learning from others is always put in question by us to check if it is really useful for us.

Let’s say your manager is not good at speaking English, but he is encouraging you to work on English speaking skills and providing some tips for improvement, would you take it?