Our thoughts matter...

Ever have a bad day and wonder why?  I have, today is one of those days for example, I woke up just sad.  I don't have any reason to be sad...I didn't have a bad dream...
(I'm not saying someone is thinking bad about me-I'm not that vain.)

We hear all the time, pray for so-and-so, or I am sending you positive vibes.
What about the negative ones...if positive thoughts and vibes can help someone, can negative ones hurt? 
I think yes.

In Mosiah 4:30 it reads:
But this much I can tell you, that if ye do not watch yourselves, and your THOUGHTS and your words, and your deeds, and observe the commandments of God, and continue in the faith of what ye have heard concerning the coming of your Lord, even unto the end of your lives, ye must perish. And now, O man,remember, and perish not.

Our thoughts and words MATTER. Even if what we think or say isn't heard by the person we are talking about, it is still FELT by them. 

If prayer and positive vibes are important and can be felt by someone to lift them up and give them a boost. Negative thoughts can also be felt to hurt and tear someone down.

I think people can feel what is being sent to them whether it is positive or negative.

So, D&C 108:7:
Therefore, strengthen your brethren in all your conversation, in all your prayers, in all your exhortations, and in all your doings.

The end.