I believe the reason why people only share the good parts of their lives because people want to make their lives look fantastic and perfect. People like to act like their life is better or the best than out of everyone.
I think you need to be careful about what you post and send because the internet can personalize all the information you search and post e.g. (search: Holiday to Fiji). If you do it enough times and research into it your ads will turn into Fiji holidays.
The most challenging thing about this was doing all my tasks on time while making sure that my work is at the max level. (which I didn't do)