Sure it is possible, I've done it 3 times and lost it all again. No joke, I invested in trying out different things, cash, SnG's higher levels... The experience I gained is that I should stay in MTT's.
I play only selected tournaments now and feel better every day, as I meet most of the times the same friends there. And yes, I remember, what this guy did to me yesyterday.
So as this is the second step of my "carreer", I will try to keep my bankroll stable with still a lot of freerolls, some cheap MTT's and as soon as I can book some winnings, I will investigate some higher grounds.
Regarding SnG's (as we speak of 1-table) it takes too much time to climb up for me. I make it aproximately every 2nd time into the money, but 3rd place doesn't even pay the next buy in, 2nd place breaks even and gives you some pennies besides and only first place really helps you. One time not in the money and you have to struggle to win the buy in back.
In an MTT you reach the money and are safe, the rest is fun. I once made it to place 10 (aprox 450 field) and the buy ins for one month for this Tournament. I made it anothertime into the money and got 4.5 buy ins. or net winnings
But you have to figure it out for yourself, play always the same games and see how you are doing, feeling and winning. It's not a good idea to say: I must win, I need the money, and expect to play your best poker. In case I win the tournament only once a year, the buy-ins for a complete year will be paid and all winnings will be earnings. And I have 365 chances to win it.
If I had to play SnG's I would start with the smallest buy in and invest the winnings in bigger ones until I find my level where I constantly loose. Get back to the smallest and level it only up to one level under your loosing level. So for 10$ I wouldn't play 10 times a 1$ SnG, I would play 100 times a 10c SnG that gives me a 1$ ticket, or something like that. You just can't expect to win every time, because I want to win as well sometimes