Everyone has freedom of action to do as they will.
It is for you to decide what to do,
but you also must accept the consequences of your choice.
You might destroy your earth-body
but your spirit is indestructable and has eternal life.
Your imperfect body will be perfected,
eg. eyesight, hearing, cardiovascular problems,back problems,etc.
but your individuality and charactor remains unchanged,
for the soul starts after death from
the same stage of evolution that had been reached.
The problems from which you have hoped to escape
remain with you and also the realization
that death hasn't solved anything.
The act of suicide brings you into the world
prematurely and you'll remain suspended between the earth and astral plane
(the first stage beyond earth ) until you have advanced in your
evalution to the point where you would have in physical life.
Only at that point will you be able to cross the barrier and join
your loved ones in the spirit world.
The process of reincarnation is like putting out a shoot on a tree or plant.
Though humans may think of themselves as complete beings,
only an aspect of each entity is actually manifested through
the physical body and the brain.
The rest of the entity is whole in spirit,
but is linked as one with the human body.
When an entity is born again, he or she will have different parents,
a different body, different brain, different background and ancestry.
Everything will be different.
But a part of that central "tree" would be infused into the new person
just as a tree or plant puts out a new leaf.
When the individual "dies" he or she is reunited with the original whole,
as the infusion returns to its origin.
The identical person does not keep shuttling back and forth
to earth in the same body.
Its like being compared to an actor;
he plays many parts but always remains essentially the same inside
no matter how he may disguise himself outwardly.