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Certain type of Dreams is the bedrock of our reality. What you experience in your life first happens in your dreams as a potential, whether or not you remember them.
So it's not a question of power.
If you are aware of your dreams you can tap into that field of potentials and see what is available to you, and make a choice.

Making a choice from dreams.. Hmm interesting... Dreams are of course related to our real lifes but hardly do i dream about present situations etc.. Do dreaming in that way be taught to brain?

Dreams are like movies. Some are science fiction, bizarre and seem to be not connected to your daily life; others dramatic, telling a life story, from which you can learn a lot.
When you train your mind to trust your dreams, to remember them, to open up to them, you begin to remember all your dreams, the various types.
Then, when you wake up, you decide which dreams you contemplate and which you release with a smile.

I hardly remember my dreams is this a problem or natural... Or sometimes i would remember part of a dream.