take it upon oneself (tomarse la responsabilidad)

Idiom Responsibility

Meaning

to decide to do something without being asked or required

decidir hacer algo sin ser pedido o requerido (decidir hacer algo sin ser pedido o requerido)

"She decided to take it upon herself to organize the event."

"Ella decidió tomarse la responsabilidad de organizar el evento." (Ella decidió tomarse la responsabilidad de organizar el evento)

to transfer control or responsibility to someone

The more people there are, the better the situation becomes.

to control your emotions and behave sensibly

to learn by making mistakes or through difficult experiences

to put pressure on someone to make them behave or act a cert...

something or someone that is difficult to understand