взявший на себя обязательство(I could not attend the debate because I was at a meeting with some senior voters living in the riding, which was planned prior to the notice of Tuesday night's debate. I am committed to attending the Board of Trade meet-and-greet next Monday." – взял на себя обязательство присутствовать на ...ART Vancouver)
неустанно стремиться(sth.- к чему-л. • For twenty-five years we have been committed to bringing top-quality medical care to our patients. -- неустанно стремимсяART Vancouver)
не отступать от своей цели(He was emaciated, dehydrated and suffering from a severe case of mange. His rescuers knew it would take a while before he was fully healed, but they were committed to making sure he got there eventually.ART Vancouver)
важно стремиться к(You should be committed to continuous learning and improvement so you consistently have up-to-date knowledge. — Важно стремиться к непрерывному обучению и развитию, чтобы ваши знания всегда оставались актуальными.Alex_Odeychuk)