with all one's might

It’s sometimes good to go about much in the world and to be among people, and at times one is actually obliged and called upon to do so, or it can be one way of ‘throwing oneself into one’s work unreservedly and with all one’s might’, but he who actually goes quietly about his work, alone, preferring to have but very few friends, goes the most safely among people and in the world.

If such a condition is consummately miserable, the moral is to shun vice, and strive after virtue with all one's might.

With her it was better to have striven with all one's might and encountered disaster than to have lived fallow, a life of the most perfect rectitude.

False hope is clung to with all one's might and main, till a day comes when it has sucked the heart dry and it forcibly breaks through its bonds and departs.

He had a strong belief, which grew in intensity with age, that the only chance of realising one's true life was to do something that interested one with all one's might.