Oh this quote has the potential to be very true doesn't it?
. . . and this can be so great, or instead - rather dangerous.
In some circumstances competition is wonderful, powerful, a joYful part of life that inspires and challenges, motivates and moves.
In some circumstances competition is harmful, oppressive, a part of life driven by fear that hurts and threatens, devalues and saddens.
Let it be wonderful. Don't be afraid. Someone who is playing your instrument loves what you love and there is plenty of that to go around - love. Remember that the universe brings you exactly what you ask for and if you ask for joY, you will recieve it. Nobody can steal that from you, even if they are asking for the same thing. There is enough.
If someone is playing your instrument, you don't necessarily have to be better.
You can play together.