It is best to turn off all distractions. Put a sign on your door, if you share living space with others. Turn off your phone, if you think it might distract you. Look for a meditation group in your area. This can be an excellent way to start.
Some people find that music is helpful.
When using music, it is important that it is music designed for meditation. Classical and other types of music have melodies that your mind will follow and thus derail you from your journey into silence and peace. The best atmosphere is one that tell you that this time is all yours. No one has a right to it. Claim this 15 minutes as yours.