a. This experience, as a result, has made me more disciplined in money management and helped me understand what the saying "money doesn't grow on trees" practically means.

b. It had, in fact, never occurred to me that balancing a job with schoolwork would be so mentally and physically demanding.

c. I had to create a strict weekly schedule, handle difficult customers with a smile, and manage my small budget for commute and meals.

d. Having hands-on experience working as a shop assistant for a month really exhausted me, but at the same time made me more appreciative of financial independence.

e. The daily routine was such hard work that it made me feel drained every night and even struggle to wake up early for class.