Liam Rosenior was sacked by Chelsea club just over 100 days after being appointed as coach, while his contract was valid until... 2032. Initially, the term of the contract made people believe that there had been a change in thinking and vision. However, the world of football has a way of operating harsh enough that all trust can collapse in just a short time.
The problem is not that Rosenior is not good at his profession. Like Frank Lampard (who also suffered at Chelsea), Xabi Alonso and many other colleagues, they built their reputation in small and medium-sized teams but collapsed when they came to a large team. It's just that their management skills have not developed commensurately, even when many people still say they "understand the club".
In other words, in an era where being good at professional competence alone is not enough, working between people also requires paying attention to many other aspects. Expanding to life is also the same, many young people are very good, may be assigned roles to lead teams, even an organization, but soft skills are not enough to handle problems.
The environment is the most important factor to determine the success of a leader. All young people, equivalent capacity, and sociable and easy-going individuals will be a better foundation for a young leader. Conversely, a collective of all ages, with many personalities and different professional qualifications, requires in the leadership role the element called "people's hearts".
The problem is, young people often cannot reach that threshold without experience. As psychologists still say, when you cannot solve the problem of the collective, go back to yourself, look back, evaluate yourself. Of course, there are still things that are out of your control - including the unstable environment like Chelsea, but at least, work with yourself to recognize the problems inside. A normal person with a solid system will always go beyond a genius struggling in his own chaos.
Life does not pay for what you "can" do, but only recognizes what you "complete" persistently.