Get some exercise! Stay active to maintain good balance and muscle tone to reduce the likelihood of falling.
Be aware that certain medications may cause dizziness or drowsiness. Whenever sitting or lying for a prolonged period of time, allow time to equilibrate your blood pressure by changing position slowly and with support.
Check your vision and eyeglass prescription every year and make sure that glasses have the correct prescription. Reduced or blurry vision is a major contributing factor to falls in the home.
And be sure to eliminate the trip and fall hazards as outlined above!