The phrase "to hit the jackpot" means to experience a big success, usually by winning a large amount of money or achieving something highly desirable. Full definition
«We kind of hit the jackpot with each other.» (latimes.com)
Naturally, I really hit the jackpot when we visited the village of Chimayo which is located on the High Road to Taos between Santa Fe and Taos. (highlandsranchfoodie.com)
Sure, having more flavors of ice cream to choose from or more paid vacation time is like hitting the jackpot at your local Native American tribal casino. (autoguide.com)