history: Once I achieved a new project at work that make a big difference of how difficult tasks are done. The result was that now co-workers can do many tasks faster and save a lot of time. I feel very proud to be able to make that importante change at work and I think that my boss will do something for me. Maybe it will be a raise in my salary.  It always feels exciting to do something big at work. It always feels good to feel like you are making progress in your career. 
current: Yes, and my collegues and friend are very happy too. They see me as a new leader in the group.
next: Also, maybe this is something you can put on your resume and it will look good in the future. 