My high side of 50 goal is generally to be in good enough shape to continue to chase and be chased by 20-30 somethings.
Consistency is the key, some is better than none but more isn't always best. Lifting heavy with low reps and lifting light with high reps will both get you strength increases if you are lifting to fatigue/failure, one is more efficient but also more likely to cause injury. Do something every day but don't work the same muscle groups more than every 2-3 days. Functional strength is more important than maximal strength. Eat well. Get good sleep and recovery. It's cliche but it's true.
Go fast. Have fun.
Full lower body workout last friday w SVS and the kid.