What you speak is powerful, IF you are speaking words of truth.
Sometimes people will say something like, "I'm worried that..." or "try not to...." or "be careful because you might...." etc. These are all coming from the victim mind and are statements of what the person believes.
They are actually affirmations, which affirm that they believe there is some potential for bad things to happen to you. They are an attempt to diminish power. They are CURSES.
It may seem as though someone is being considerate when they say they are worried about you, or that they are seeking for your preservation when they say they're afraid that something could happen and to be careful etc... but secretly this is laced with attack.
If you are really looking out for someone, SPEAK TRUTH INTO THE SITUATION, don't speak and make more real the ways that bad things are going to happen.
Instead of "be careful you don't hurt your back", what about "your back is strong and safe and cannot be hurt"?
Instead of "don't go to that store because that person might be there", how about, "I see you as empowered and confident and nothing can affect you."?
There's a big difference between fake concern and real support.
Just as guilt is not love, fear is not support. Fear is an attack. It is a further attempt to condemn and curse the situation and keep your brother in a prison.
You can set people free when you use words of powerful truth that are aligned with and extend God's power. They are not just words but carrier signals for His power to flow across. They can move mountains. When your word is the same as God's word, you can perform miracles.
A bible quote along such lines: "Have faith in God,” Jesus said to them. “Truly I tell you that if anyone says to this mountain, ‘Be lifted up and thrown into the sea,’ and has no doubt in his heart but believes that it will happen, it will be done for him. Therefore I tell you, whatever you ask in prayer, believe that you have received it, and it will be yours.…"