If you strictly follow the fasting plan of the Orthodox Church, i.e., “according to the monastic charter” you end up fasting for a pretty good chunk of the year. Strict fasting means nothing with a spine (or that might grow one, i.e., eggs), no animal products like dairy, no wine, and no olive oil. This last bit is subject to some discussion as folks wonder if that similarly discounts other oils like coconut, avocado, and so on. Beer is considered liquid bread in the Slavic tradition and so is fast-friendly. All this being said, most of us are not monastics, and many of us have health issues that prevent us from strictly following the fast.
So what is left? It’s not all that hard if we honestly look around, to find things that we probably ought to be fasting from more often than not. Just off the top of my head, we should probably fast from our favorite sins, from gossip, from jealousy, from anger, and from all those other things that are well within our control and that we all too often allow to control us. Whatever we fast from, and however we do it, we need to do so consistently, with prayer, and with guidance from your priest (ahem).