What if we could reduce and increase the gravitational effect to the required ratio?

You might think it could be like this or I think my question may sound ridiculous for many reasons.

But I think that we can definitely change under the influence of gravity on some limited occasions.

The change in gravitational effect in part proportionately could prove useful for space stations and astronomical exercises in space.

Also, if we can reduce and increase the effect of gravity in the required proportion, then we will be able to move in a controlled manner in space.

This can happen only when we get particles of gravitational energy. Which was mentioned by Sir Albert Einstein in his theory of relativity.

I am not able to give the basis of logic to my imagination that how human can walk in space in a normal way.

But the possibilities in quantum physics amaze us, maybe it will be possible in the future.