Answer:
Because now he's more experienced.
Explanation:
The first time Brian used it came with an ax in the forest, he was completely terrified and unsure, he didn't know how to behave or what to do correctly in that environment. All this insecurity was due to Brian's lack of experience with the ax, which made him feel alone and out of place.
However, as time went by, he gained experience and practice, which stopped him feeling lonely and gained more confidence in his activities.
