Sometimes, being more productive means that you need to take a break every once in a while.
It’s great that your goal is to perfect and become very fluent in English, but you risk getting severely burnt out. Take at least a day off where you’re not studying English. Reflecting on your achievements can help as a quick motivator to further your skills.
For example, if you feel like you can’t learn any more vocabulary words, take the time to revisit words you’ve already learned. Really look at the words to get a sense of what the definitions are, and how you can apply them in a work setting.
Take the time to consider how you can apply what you learned. During this process, you might even find that you discover new definitions of those words. You might even find that taking the time to revisit these words gets you excited about learning more.
There is nothing wrong with not always pushing yourself. Constantly pushing our limits means that it’s difficult to keep perspective, to check objectively that our study methods are actually effective.
You don’t have to slow down for long periods either. Sometimes, a few days or even a week is all it takes for you to get back on track.