It is always nice to get an early double up and have a decent chip stack to see you through lean times when you cannot get a hand, it also gives you the power to pressurize shorter stacks and steal blinds, but you have to play carefully, as some players will fight back even with shorter stacks.
All you can do is play the hands you are dealt, and sometimes even the better hands will fail to make you money, either because you are raising too high to keep players in the hand, or they try pushing you off a hand, which could be considerably better than their's but they shove all-in and you just have to call or fold.
The skill comes from knowing when to push players around, and when to fold even good hands, how many times do you see A/A crushed by a 7/8 or J/10 in all-in flips? it happens all the time, some call it a suck-out or bad beat, which it is but that doesn't stop it from happening.
I remember on 2 consecutive nights, I went out of a free-roll tournament, on the very first hand when I had A/A crushed by K/K on the first night and the following night K/K crushed by A/A, it happens, but you cannot cry over it, and if you ain't calling with hands like that, what hands do you call with?
Poker is a fun game and the only reason I play is purely for fun.
When the fun Stops, STOP!