Not gun fights or fist fights but goals and tasks that you decide to challenge in your everyday life. You can't just get yourself into every fight and expect to win. Here's some tips to prepare yourself for the next challenge.

1. Divide and Conquer - Split the objective into smaller ones. This should be intuitive. You are not Ip Man so stop trying to fight 10 battles at the same time.
2. Henchmen first, Boss last - Like in movies, the protagonist always fight his/her way through the henchmen before confronting the boss. Complete the simpler tasks first to build up confidence.
3. Skip some fights - There is no reason to fight every single battle out there. It is wise to only fight those you need to and let your sidekick handle the rest.
4. Don't bring a knife to a gun-fight - Make sure you are well-equipped. You are going to need all the help you can get.
5. It's okay to run - If it's just too hard, retreat and fight another day. Go for something that's easier first (Rule #2). Don't waste time on fights that you can't win (yet).

If you keep these tips in mind, you'll never lose a fight again.