As I get older I remember all the people I’ve lost along the way...
As I get older I remember all the people I’ve lost along the way I think to myself, maybe a career as a tour guide wasn’t for me. This joke is funny because of a pun - the phrase "lost along the way" normally is used to indicate that something was lost in the process of time, and when used in regards to people the reader expects that the people were lost due to the jokester growing apart from them due to time passing. The ending of the joke indicates that instead of the expected colloquial meaning for the phrase the jokester was literally losing the people that she (or he) was supposed to be leading on tours.