Based on everyone's capability the time frame to achieve might differ but dedication is required from everyone. The level might differ but it's always necessary. And many quit at the last mile either thinking they are not ready yet or either thinking it's impossible.
Who knew somebody would achieve 8 Wimbledon titles I guess only Federer believed, decided and dedicated and hence he achieved it. Hence It's always easy once someone has done it. All challenges come in front before it's done.