to take on new responsibilities or duties
взять на себя новые обязанности или роли (vzyat' na sebya novye obiazannosti ili roli)
"She confidently stepped into her new managerial role."
"Она уверенно взяла на себя свою новую управленческую роль." (ona uverenno vzjala na sebya svoju novuju upravlencheskuyu rol')
to pursue what you truly love or are interested in
to get yourself mentally ready and enthusiastic
to volunteer or take initiative for something
to improve yourself beyond what you thought possible
to prepare yourself for something exciting or challenging
to introduce or suggest new ideas for discussion
