I saw a quote from Jim Wendler recently that basically said - "Find a way." I've been coaching lifters remotely for about 6 years now, and clients fall into two buckets.
Bucket one: I couldn't use that machine because someone was on it so I skipped it. I couldn't bench because my elbows hurt. I didn't have time to fit my last two movements in. The SSB was being used so I didn't know what to do. I didn't get enough sleep last night. Bucket two: I tried benching but my elbows were still sore today so I switched to some dumbbell bench and was able to get it done. Someone was using the SSB so I hopped in with them. They were using chains so I dropped some bar weight and was able to get it done. I was late getting to the gym so I had to go back in the morning to finish my assistance work. I was able to get it done.
Notice a difference? Find a way. Just get something done. Besides maxing out or just doing something totally off base, there isn't a whole lot you can do in a single training session that can't be adjusted for. But when you just skip things, or throw your hands up and say "I can't" or "I couldn't" then I have a hard time feeling sorry for your lack of progress.
