Are you working out on an empty stomach? I'm finding good results from lifting about halfway between meals. An hour after my lunch I hit the gym, and by the time I'm done, there's only about an hour til my next meal. Try to get some cals in a little while before you lift, something with some good fats/carbs.
My Training Log
Personal tips that I've learned along my still short journey:
Leave your ego at the door.
Prepare. Showing up dehydrated, hungry, and tired will guarantee failure.
Be ready to fight for that grinder of a PR.
Listen and learn. Absorb everything you can, and assimilate that knowledge.
Top Gym lifts: