Wanting, to want to live; not wanting, to want to die.
Yep, know how that feels. I think a lot of us, if not most of us, have felt that way at some point (and maybe feeling it right now right along with you). Some will be afraid to reply, because they don't have an answer and don't want to make you feel worse.
I can, and will, tell you what I do that helps, but this is highly personal and your situation might need a different approach.
First, I take a B-complex vitamin each morning. This gives a boost to my focus and motivation; as long as I have a following goal in mind for the day, this gives me more spring in my step to get there. Having a goal, something to focus on and keep busy is key. Taking the vitamin without having anything to do that day will, at least, help ease the feeling a bit (it does for me, but can't speak for everyone), but it won't get you all the way to 'not feeling' the uneasiness on the cusp of wanting & not wanting.
Second, keep a daily schedule. You don't have to do the same things everyday; just have a plan for each day, and a set scheduled time for all your daily activities. Maybe you like to be impulsive and free to do things on a whim? You can schedule that in too -- call it 'free time @ 2-3pm' :)
This sounds like work; it is. If you realy want to pull yourself out of this feeing, it isn't easy. The easy way (which ends up being the hardest way) is doing harmful things to your body like drugs and alcohol. You end up in more trouble than you started with -- so don't fall prey to things that seem like they could be helpful in the moment. Maybe they are helpful in the moment, but do more long-term damage than if you took the harder sweat & tears road.
Third -- tears. Letting yourself feel bad is ok. Cry if you have to; it is a tension releaser. Expressing your inner turmoil in the form of outward emotion, writing your feelings, talking to the wall, hitting a punching bag (I have one in my attic I wail on, along with 3 thin mattresses tacked to the wall for hitting and kicking to my delight). Whatever it is -- expression of feelings can release some pressure and you'll begin to feel less of that inner turmoil (because you've let it out).
Doing all these things combined helps me a lot. Maybe they can help you too?
Hope you find some peace, I really do, because I know what that 'wanting, not wanting' thing feels like.
--{@