Investing is a gamble, i'm well aware. It's much like Poker, there are winners and losers. You can make a smart bet and lose, and you can make a dumb bet and win.
But those who win in the long run understand Bankroll Management. The basic premise behind Bankroll Management is that you don't enter a tournament or buy-in to a cash table with more than 1/20th of your bankroll. Doing this significantly reduces risk.
Anything in life is a gamble depending on how one perceives it.
I suppose you guys who do mediabuys/ppc dont go all in either, i would presume you test the waters first and then take it from there, dunno probably talking bollock here.
But it is one of the things that i do. I go in small, test it, if it confirms itself, i add, rinse and repeat until i build a good solid position in the market.
Going all in is the equivalent of walking upto a bird in a club and asking her for a shag from the get go. yes, you may get the odd horny one who takes you on, but more than likely you have to work for it, you know, warm her up, get a feel for how its going, and when it confirms itself you take the next step, rinse and repeat until you get what you want be it in her flat or alley/toilet/you name it.
Test, test and test, once confirmed, build a position.
Easier said than done.
Trading/investing is the same, many setups will fail, many will win, but the key point here is to truly understand why it failed, NOT why it worked.
Never played poker funny enough, few mates of mine go to vegas and all that good stuff but frankly it just doesnt appeal to me, ive got my fair share in trading.
As for risk/money management yes its key just like in poker, but its not the be all end all either, more is required to gain a long lasting edge.
The point here is that one can trade an instrument naked, but by diversifying *correctly* it allows for a smoother equity curve, less volatile dd's and better odds of succes (arbitrage?).
You can make the "right" investment and still lose out due to variance (market conditions you don't control).
Unless you build an approach that doesnt concern itself of market conditions.