A recent bipolar experience

Recently I entered the manic phase of bipolar depression and decided to re-open an old programming project that I had begun a year or 2 ago. I began to try and to continue with sed project until I realised that I had badly commented it and could barely read a line of it and began to slowly slip out of the manic phase. I just wanted to know if anyone else has ever experienced something like this or if it is just me.