Preheat your oven to 325°F (163°C).
Heat olive oil in a large pot over medium-high heat.
Season the roast with salt and pepper, then brown it on all sides in the pot.
Remove the roast and set aside.
Add onion, carrots, and celery to the pot, cooking until softened.
Stir in garlic, cooking for another minute.
Add beef broth, Worcestershire sauce, tomato paste, thyme, and bay leaves.
Return the roast to the pot, cover, and transfer to the oven.
Braise for 3-4 hours, until the meat is tender.
If you want a thicker sauce, mix cornstarch with water and stir into the pot before serving.