It’s how you say it.
Do you often use phrases such as “it’s only me” or “I’m just calling about”? These words “only” and “just” may just(!) be holding you back. Think about the context you use them in. How does it affect our self esteem when we slip this sort of message into into our everday communication? “Only me” does not rate you very highly in the importance ratings. You may not wish to be important a such but these small words can give you a clue as to how much you value your place in the world. If you are “just calling about” depending on the context, the person you are talking to will already be making unconscious decisions about how important whatever you are about to say really is. If you went to a surgeon and asked if he or she could perform a particular operation and their answer was “hopefully” or “I’ll try” I think you would soon be looking for a second opinion. By just using the one word “yes”, for instance, you can immediately send out a different message.
Be careful that the things you say do not give away your power. It’s not what you say but how you say it.