what will make or break a work team

A team is a group of people who co-operate and work together for the same objective. Whenever a team gains recognition, it is due to the bond that holds them together. But what exactly makes a team break up?
On the surface, people will think that a team breaks up due to arguments or due to the division of the team members. However, the breaking up of teams is way beyond the simple logic which a lot of people reckoned to be. From my past few years, I have witnessed and experienced the breaking of teams. Normally, the very first reason is due to a few people being very trendy. Due to their way of life, they get bored very fast at something they used to like and start to have different views with their other teammates. Due to the selfishness of the member, the person leads to the dismantling of the team by having no one else to replace the lost member and then lead to everyone leaving too. Therefore, it is an irony that while a team is formed due to trend, it is broken up due to trend too.
Some teams however can persevere on, be it having different timetables or different aims, solely due to the fact that they still all strive towards their own goals and also due to having same interests. That is what makes a team stick together.
To succeed as a team, everyone must, most importantly, play their own part to support the team. If a team as any member that does not play his/her own part, the team will malfunction and cease to work. Therefore, everyone must do what he/she has to do to make the team successful.