What does 'Jump in feet first' mean?

If you jump in feet first, you approach a task or activity with little to no hesitation. When you jump into a swimming pool,  there's no going back once your feet leave the ground- you will enter the water. When you jump in feet first with a new activity or task or requirement, you give it your best, knowing there is no going back.

Idioms similar to 'Jump in feet first'

See also: