In the world of retail, you come across a lot of interesting things. Expect to deal with bad customers, strange demands, and a whole lot of desperate scams.
As humans, we like to try new things. Sometimes, we develop new hobbies this way; other times, we realize that a certain activity just isn't meant for us.
Life's a learning experience. Some lessons we must learn the hard way, but the important thing is that we learn them. Taking the advice of others will help.