Before we begin talking about rights, Lets discuss on what dreaming is all about.
If you were to ask about the definition of dreaming to the following professionals. They would say :

Doctor : Dream is a process of hallucinations occurred in brain to get relief from continuous working and to prepare it for the next task.

Chemist : It is the process of chemical formations that restarts the brain.

Psychologist : It is phase of information transfer from conscious mind to subconscious mind.

Religious scholar : It is the process of speaking to the spirit.
But if you ask the genius me :

A dream is self motivation of your inner thoughts. A dream is not only just what you see in sleep while your eyes closed but also what you imagine to achieve or happen even while keeping eyes open.

The good thing about imagination is you can dream of visiting any place, be the richest person on earth and anything you can think off, And all this dreaming is free of cost and doesn't even require a high speed internet connection. Keeping all these temporary gains aside.
Dreaming does also help us in various ways in our day to day life habit. One of its benefits is there is no criticism to what so ever you imagine and this does strengthen your self esteem and makes you more confident.
Constant dreaming on a particular problem can even solve a lot of difficulties.It is said that many researchers have found answers to their experiments by continuously dreaming about them. It is also seen that successful businessmen and entrepreneurs have vivid and enriched dreams.
One of the common causes for dreams to occur during night is the regular and non stop thoughts of acquiring a certain gain which makes your mind believe up-to an extent, What you are dreaming is actually true and happening in real.This feeling is very important to mold and develop your personality towards achieving that particular gain.

So, I believe as we all have the ability to dream, Why not start dreaming that we are happy and at peace giving a blow to our hardships and struggles and adjusting our personalities to tackle them without bringing a frown on our faces.

Also before starting the practice to dream for achievements please take my little piece of advice, Avoid dreaming while crossing the road :)