toddler, is this the hardest age we deal with?

My lil man always been a little naughty but tolerable. Since he is nearly turning 18 months he is now showing a temper. If things don't go as he wish he rolls on d floor i can hardly lift him up. I know this is normal as i have babysit my cousins at this age but since i only have one is this the hardest part of them growing up or its more hard when they turn 2 or 3?