If flame is self-extinguishing take a moment and wait until wick is cool then loosen the wick fibers by twisting the wick with your fingers and relight.
Blow out the candle and ensure the wicks are completely extinguished.
Use a paper towel to absorb some of the wax near the wicks of the candle.
Dispose of the paper towel and ensure no debris is left in the wax.
Relight your candle and note if the candle begins burning properly.