Give (something) (one's) all Verb + object/complement informal
To devote all of one's energy, effort, time, and/or resources to a certain undertaking, activity, or goal
The young man abandoned his hobbies to give his career his all.
She gave her all but didn't get anything in return.
If you want to succeed, give it your all.
To do something, usually a task or a goal, with great devotion, vigor.
The verb "give" should be conjugated according to its tense.