Okay, on the one hand, I enjoy a can of Spike a half hour before training and have often made that part of my routine.
However as a more general thing, I don’t really believe that much in stimulant products for workouts, other than that caffeine is a proven performance enhancer.
If not having plenty of mental / psychological energy for training, most of the time the lack, and the way to get it, is mental and psychological.
Being prepared for the workout, and knowing you are prepared, having full confidence in it, is a big part of that. A key part is knowing what you are aiming to do in the gym pretty concretely, and having a plan that depends on performing. For example, executing this plan this week moves you towards being able to execute what you already have in mind for next week, and you’d better (in your mindset) perform today so you can kill the upcoming workouts.
That feeling of preparation can also, but does not have to, include having already started your preworkout nutrition. It can include having a workout log. Actually, all kinds of things.
I’m not saying, because I’d have no way to know and further I don’t have any such impression, that you personally are approaching it from an “oh well, I’m going to the gym” viewpoint. But where starting from there, a supplement stimulant is not going to help that problem much. And where starting from being genuinely fired up for the above reasons, a supplement stimulant isn’t necessary.
It’s more a thing to enjoy than a thing to actually need.