The first part of the quote, "appreciate yesterday," encourages us to look back and reflect on the positive experiences, achievements, and lessons learned from the past. It reminds us to be grateful for what we have, rather than dwelling on what we don't have.
The second part of the quote, "work for a better tomorrow," encourages us to take action and work towards creating a better future. It suggests that we should focus on making positive changes, setting goals, and taking steps to achieve them.
Overall, the quote encourages a balanced approach to life, where we acknowledge and appreciate the past while actively working towards a better future.