My wife and I are expecting, due in June. Thought it would be a fun thread to hear everyone's best piece of dad advice.
Absolutely.You are not their friend ... You are the parent.
^^This. 1000 times this^^You are not their friend ... You are the parent. Do the work and, not just the fun work. This only works if you are fully immersed in their well being. Do the best that you can, seek assistance when necessary and do not forget mom's "me" time. The first bit of time you are almost the "third wheel" in the new and evolving relationship. Stay involved, do the work!