First things first, you'll need to set realistic goals and create a training plan that works for you. Don't worry, it's not as scary as it sounds! You can start by committing to run a certain number of times per week and gradually increasing your distance and speed over time.
Think of it like baking a cake - you need to start with the right ingredients (a solid training plan) and follow a recipe (a structured schedule) to get the desired result (a delicious, shiny cake... or in this case, a strong, healthy runner!). And don't worry if you don't know where to start, there are plenty of online resources and running communities to help guide you along the way.