@stoneMason-- That's a problem that many people experience. As someone who has spend a large portion of her life as a student, I can give you a few tips.
First of all, when it comes to language learning, it can be easy to lose concentration and get bored because the course materials tend to be repetitive. The routine of exercises, reading and writing can become uninteresting and frustrating after some time. That's why I recommend taking breaks with exercises that will still help you but will not bore you.
For example, you can do a cross-word puzzle, play a word game or watch an English film or TV show. If possible, watch films and shows with English subtitles or the captions on. Reading captions or subtitles while listening to English is an excellent way to learn. I have used this method to learn other languages. It supports the learning process and keeps the mind active. You will be surprised how many new words and terms you pick up that way.
And make sure to take frequent breaks during your studies to give yourself an opportunity to relax and gather energy for another short study session. I usually take a five minute break every half hour.