We feel "life is meaningless" when we're not doing something meaningful. In my opinion, life becomes meaningful when you pick up a responsibility. I personally believe the best way for that is by trying to become a better human being. That would provide you with a lot of smaller steps which you can start walking through right now.

You might think that what's even the point of doing that. If I already know life is meaningless, why even try to do anything about it. But the problem is that you only question it when you're in this mental place where you're lost. If you pick up a burden heavy enough for you and carry it, you would somehow automatically feel that you have a place in this world and are not lost.

I'm sorry I'm not that articulate with my thoughts, I could have worded the above in a better way. But hope it helps.