Most people want to make a long-lasting difference.
They’d like to know that the work they did will outlast them and be a legacy of sorts. That’s a good goal, but it’s hard to guarantee. With the pace of change, it may be that your work will be replaced by something better faster than you imagined.
It might feel like your work was unimportant, but the thing that replaces your work was probably made possible by your work.
Progress is a series of steps and each step is important.