You already have the life you need, or you would not be alive, everything else is desire, remember that. The only happy people are those who are happy with what they have right now. This does not mean they do not want more, or something different, but they unlike most understand that all people will want more, but most are unhappy because they do not have it. Stupidity is to think that upon reaching a goal you will never want anything again, you will, be it a partner, a better crop, a better solar system, to build a hydro from your waste water as it falls, discovering you should have built on a hillside so you have fall for hydro no matter how tiny (you can put hydro machines on taps)
I live without power and water from connections, sometimes it is hard, no sun or fuel for the generator, hasn't rained so i have to cart water, my girlfriend would rather live on the grid. whatever you think will make you happy or "give you the life you want" is simply a matter of acceptance. Accept what you have now as "your great life" you will make better regardless of all these things you want to "add to your great life" and you will always have a great life.
As for the practical applications of off grid self sufficiency, be worthwhile, get a trade, carpenter or electricians are best, if the world ended and you are only a grower, who will fix your house, build your power equipment to pump water and so on? learning a trade gives you common sense building skills, a welder is another good one or steel worker. think of something you would use to be useful other than farming, anyone can farm enough to survive, it may not be the ultimate in horticulture, but you can learn this afterwards. your trade will help to set you up, you can fall back on it and so on for extra money. buy hillside land for water collection and hydro use, yes even a half acre block can produce hydro, hills get good wind for turbines, all very helpful when it is cloudy for days.
don't concentrate on having it all at once and right now, but buy the land as soon as you can, it is going up really fast everywhere, and at least you can camp on it if you have no job, old dumpy caravan, 4 100 amp hour batteries and 500watts of solar to recharge them, they will run your computer your lights and your bar fridge in the van (turn off bar fridge at 4pm daily and on at 9 am keep ice bricks in freezer everything will stay cold) there is your escape place, and you accommodation while you build when you have enough money to move to your block. buy diesel only vehicles and generators, you can make biodiesel but you cant make petrol. good luck