Yes - I am in the process of doing that right now. The results are mixed but mostly positive. Without going into too much detail, we were very good friends for 3 years at my first job out of uni but when my contract ended we lost touch. It’s about 20 years later now and although I still enjoy their company the friendship is very different. It’s helped me reflect on how I’ve changed since then. Definitely worth it, but not without challenge.