If I could offer My thoughts on DIMENSIONS????
Instead of thinking in terms of GOING somewhere, think more that the multiple dimensions as been in the self same location as You are presently.
Then what is occuring is TRIPPING onto a different geometry.
To better visualise this look at what Hermes trismegistus is holding in the palm of His hand.
Then visualise a perfectly packed universe of such geometric substance.
Each different dimension is located on the relative geometric faces of that packed substance.
There is then an ENABLING force that has a duality of spin, it enables the TRIP across onto different faces of the geometry to occur.
DMT been the best clue, imho.
WHY???do You fear water???
You are water, the geometric substance that is universe enables water to be, there is nothing to fear, and only fear will stop You entering anywhere.