Pour oneself into American phrase slang
If you "pour yourself into something", you get completely involved in something.
Kids are pouring themselves into watching a cartoon.
She decided to pour herself into playing piano to become an excellent pianist.
If you "pour yourself into something", you try to fit yourself into extremely tight clothes.
She has gained weight and she keeps pouring herself into those dresses.
The verb "pour" should be conjugated according to its tense.