Provided the exercise which was lacking in his life.
They may lack a sense of purpose or meaning in their life.
The knowledge made for a security that had been lacking in James' life.
If there was something lacking in his life, he did not know what it was.
Sadly, the Burroughses were not the only family members who lacked interest in his life.
This place'll give him a good chance to get used to animals, something that's been lacking in his life before.
But none of it made up for what was lacking in his life.
Then again, common sense was sorely lacking in his life recently.
A rogue is an adventurer which she lacks in her life.
The fact that they were lacking in my life was even less obvious to me.