A study session needs a task with a visible finish. “Study science” is broad; “explain three differences between evaporation and boiling” gives you something concrete to complete and assess. Choose one output, gather the required material, and remove avoidable interruptions. Work for a manageable period, then pause to check your understanding. If attention drifts, write down the distraction and return to the next small action. Adjust the session length to the task and your circumstances. A useful finish might be a solved problem set, a labelled diagram, or a short explanation. Time spent is only one measure: also check accuracy and unresolved questions. If the task was too large, divide it before the next session. Try it today: Write a one-session goal, a stopping point, and a way to check the result. End by recording the next action so restarting is easier.