If you have a small food processor, I highly recommend using that to finely chop your habanero pepper. This minimizes touching the pepper with your hands. Remove the stem and cut the pepper in half. Then process.
If you do not have a small processor, you may cut by hand. However, I recommend wearing gloves when handling hot peppers, if possible. Make sure to thoroughly wash your hands after chopping.
Add all the chopped ingredients, lime juice, and salt to a medium bowl and mix well to evenly distribute the flavours. Serve immediately, or refrigerate for 1 hour to chill.
Notes
If using frozen mango, make sure to completely thaw first.For less heat, remove the seeds of your habanero pepper or use jalapeno pepper instead.Wear gloves when handling spicy peppers, if possible, and make sure to thoroughly wash your hands when you're done. Avoid touching your face.If you don't have gloves, try using a sheet of plastic wrap around your hands.