You could also do this by having children and then getting on a really fast spaceship or maglev train at near lightspeed for a few years. You'd step off the train/spaceship far in the future but only have aged a few years. Then you just go look for your grand daughter and and marry her. Technically as we increase in scientific capabilities we would be able to paste minds on or off human brains (ethics and whether or not its "you" being moved about or just copied and killed is pretty severe here) and you could again do some sort of asking your daughter to give birth to you (Pasted on a baby brain or an egg tweaked to somehow produce your exact brainstate after X years development) and you could create yourself that way.

Even more strange we could probably make it so humans give birth to themselves. Some sort of slow copying over of the mothers brain and using both brains and very slowly you could seamlessly move one consciousness to the other mind and then birth yourself out of a braindead body as a new young person without any loss of continuity or the killing of another copy of yourself. I'm pretty sure we will do this route with computers and nanobots. Very slowly upload ourselves so its a seamless experience and at any given time we are half uploaded. Even weirder, if we pumped our bodies full of nanobots we could separate the cells but simulate all their connections (Including braincells) giving you the ability to turn into an ooze or cloud of cells and remain conscious. Really spooky and weird stuff and all within the realms of known science. I think we'll use that to get around the upload paradox. Replacing you one cell at a time over the course of a few months/years.

You could also be your sister's mom (literally) if you are female by artificially impregnating yourself with your own clone and giving birth to your twin. Technically you would be giving birth to yourself too but humanity is weird about that and there will be two minds that deviate over time. Now if you believe in the whole twin powers thing this might be a pretty good way of adding a whole lot more spooky paranormal weirdness to society.