I am a Whisper

That becomes a roar

Whenever you listen

I become more.

Without me you fail

But having me may cause harm

I don’t always become reality

And  I may provoke alarm.

I am a fuel

Yet an obstacle as well

You may choose to ignore me

For it could be swell.

I bring joy and despair

But you’ll never know which

Unless you follow me

And flip on my switch.

Riddle of the Week July 29 Answer