You must seize the victory. Sun Tzu has a well-known quote that opportunities multiply as they’re seized. Notice he doesn’t say “opportunities multiply as they fall into your lap.” You must take them.
Make the big move, take the risk, attack the moment you think it’s right.
If your big move is s success, you’re a hero. If you fail, you’re still a hero for getting after it and if it’s a total failure, at least you can sleep well knowing that you left it all on the field, as they say.
If you never take the risk or make the move, you choose to keep yourself in the shadows while hoping a big win comes to you. It won’t happen. Be decisive.
It’s better to be wrong than to be in doubt.