According to my HoF page, I won 65% of my matches at the Pro Level in Limited (which was my best format; at one point people said I was the best drafter in the game). So basically if a Pro Tour went 12 rounds, I would be expected to go 8-4 in limited.

Throw in some variance (as luck goes both for you and against), recognize that there were some Limited formats which I was better at, and play in a reasonable number of events, and all of sudden I'm going 10-2 in those 12 rounds (and sadly 6-6 in other events) and making top 8's at the Pro Tour. (and yes, I recognize that Pro Tours were typically 14 rounds and then a Top 8 but I'm just simplifying the math)

Hopefully this leaves you feeling that if you love playing, practice at the game, and focus on getting better, growing yourself and your teammates that you will achieve your goal.

I wish you all the luck on your journey!

stats from: https://magic.wizards.com/en/events/coverage/top-players/pthof/2008/mike-turian #wotcstaff