Can we influence our dreams from the outside?

Recently I noticed again that the dreams I have while sleeping influence my matitunal mood, and above that sometimes my whole day.

Now I am wondering if there are possibilities to influence our dreams while sleeping. I mean, there a various theories like reading a good book before falling asleep or simply relaxing, but can we also do something WHILE sleeping?

Yuna, i agree with your opinion.

Everything you done you thought during the day, should be the content of your dream

In our country, there is an adage says: dream is the thing your think about it deep in your heart.

There are different psychology theory about dreams.i believe dreams are reflection of subconscious.Sometimes dreams give information about future sometimes it takes us to regrets of past

The question had been more about what we can do while sleeping. For example I realised that if I fall asleep while listening to music and the music does not stop all through the night, I even hear it in my dreams and sometimes also the text influences my dream pictures. I just try to find out whether there are more possibilities like that. 

By the way… What do you think about sleepwalking?