Absolutely not. Your prompt:
1. Your future version tells you to kill yourself. Then how does the future version of you still exist? That's not the future version of you, that's something or someone else...
2. No, will not. Life can get shitty but who knows if there's another chance? Maybe next life is worst, maybe there is truly nothing after this. Got one life to make the most of it. Sometimes its the tiny details - things enjoy like cartoon, writing and someone reading it, pets, etc. that may seem insignificant but will feel one can't do without cause it brings one joy, no matter how tiny and faint and brief it is - who knows if next life has anime, sweets, pets or your favorite dish?
Sometimes feelin down is because of constant stress/pressure/situation/etc. from others but then it hits that some people have never even come as far as one has, some got just a taste of living but it was ripped out from underneath them before they can fully enjoy it, in situations that was far out of their control. Realize that have come far - achieved far, and no matter how shit things get, you'll be able to come through. You're tough, survivor for all the things that have already happened, and can make it through what comes next.
At the end of day no matter how shit things get, sometimes there's hope that the next day or the following day after the next day and so on will get better... hope. Hope keeps us sane and afloat, even if its reduced to near ashes, but like a phoenix, there's always hope it'll get better again, life will get better again, can survive and soar through the skies again.
Don't know if this words even help, but please seek professional help if you are at thinking bout killing yourself.