Strength comes from lifting progressively heavier loads in a small number of well-chosen compound movements, practised often enough to build skill. Train each main pattern two or three times a week, work mostly in lower rep ranges with technique you can hold, and add a little load or a little quality volume over time.
Choose one main movement per pattern and stay with it long enough to progress: A squat, a hinge, a horizontal press, a vertical or horizontal pull, and a loaded carry. Barbell back squats, Romanian deadlifts, bench pressing, chin-ups, and farmer's carries are a complete set. Rotating exercises every few weeks feels productive but removes the very thing that makes you strong: Repeated exposure.
A simple and durable pattern is three to five sets of three to six reps on the main lift, leaving one or two reps in reserve on most sets, with two to four minutes of rest. Follow it with two or three accessory exercises in the 8 to 12 range to build muscle and address weak points.
Add the smallest useful increment. If you can complete all planned reps with good technique two sessions in a row, go up. When progress stops, do not immediately add more work; first check sleep, calories, and whether your technique holds at the top weights. Deliberate lighter weeks every four to eight weeks let accumulated fatigue clear so the next block starts fresh.
Neural improvements show up within two to four weeks, which is why the first months feel fast. After that, progress slows and becomes a matter of years rather than weeks. Judge yourself in blocks of 8 to 12 weeks. The full framework is set out in Principles of Strength Training and Maximum Strength Development.