When the character is not yet modeled, studying is never easy! During the high school years it remains difficult to study for anyone, although some have more inclination.
With my years of experience, including university, I can give you some advice!
In high schools almost always the desire to study is lower than that of university years, both because one is a child and because one is forced to study.
The distractions of the study or the factors that can influence our listlessness can be divided into three categories: moral ones (which I will skip here as they are the most difficult to treat), mental ones and physical ones.
The moral factors are due to the sum of capacities, motivations and distractions.
Capabilities are generally refined over time so that you cannot hope to learn the concepts quickly but you have to work on motivations and avoid distractions. Distractions are a very important factor because some help others make our condition worse. Music, for example, often helps us because it helps us to study, if it is not a mnemonic study, in which it is necessary to speak and repeat aloud.
Other distractions like videogames instead are a total perdition because we start with the intent to stay only a few hours in front of the display and then we always postpone the study time. The television instead deceives us that it is always our friend deluding us that it can allow us to study with it when in reality it is not so.The external distractions instead like going out or practicing hobbies must be managed with extreme precision because often they bring us tiredness and they don’t allow us anymore to study as we would like. Needless to say, in fact, that with fatigue it is difficult to study even with the greatest motivations and abilities.
Regarding physical factors, I can say that a healthy body can certainly make more. Sometimes it is even possible to take energizing drinks to keep us spirited up, but not often!