In a large pot over medium high heat add the olive oil. Cook the onion, celery, and garlic for about 5 minutes.
Add the ground beef and break it apart with a spatula. Cook for about 8-10 minutes or until the meat is browned.
Add the rest of the ingredients and stir well.
Bring the mixture to a boil, then reduce the heat (low to medium) and simmer for about 25 minutes, occasionally stirring.
Add more seasonings to taste. Let the chili rest for a few minutes before serving.
Simmer uncovered for at least 25 minutes when making chili on the stove. It will naturally thicken without using any starch or flours. Depending on the desired tickness, add more or less liquid in the simmering process.