For me it would be that lifting can take time. It's okay to start with light weights and it's okay that getting bigger will take more than three months. Sure, pushing yourself is good to make progress, but everyone has their limits.
Also, lifting can be for more than just getting bigger. In the beginning I was hyper focussed on getting more muscular and it led to me taking awful homemade protein/caloric shakes which cannot be healthy long term. It took me pretty long to understand that this way of training was not what I wanted. Luckily I now know that I want to focus on strength and stamina and that size comes second.
How about you?
I live in an area where people have enough of an overall good diet to be reflected positively in the life expentancy statistics, so it is somewhat more uncommon to see people who eat in an enough of an unhealthy way to have to be taught the plate method. That is why I did not give it as much importance as you may have.
Of course, measuring everything with a pen and a notebook every day would be a self-inflicted torture, which is why almost everyone who counts calories does so with a tracking app such as MyFitnessPal. It's pretty easy to use since you can get whatever food you are eating just by scanning the barcode in the package (although it also registers generic foods) and you just have to set the weight of your dose. As for the measuring part, I have become accustomed to simply put a scale under the plate as I am serving myself food and take note of how much of every ingredient there is.