played the open on tournies Royal St George i shot -6 thought was decent looked at leader board top ones went round in 51 thats 20 under from 18 holes got to be cheating
Actually, people are that good. They invested a lot of time on their game, knowing their equipment and distances. With hard work and a little talent for the game, its possible.
If you are curious about how the best are playing, check out the various e-tour tournaments online. Those guys are good.
Look at it as an inspiration to keep grinding. There are also some good instructional videos on youtube, made by those guys. Young46 is perhaps the most active player sharing his knowledge.