Peel and dice the sweet potato into 1-inch cubes.
Place sweet potato cubes in a pot of boiling water and cook for 12-15 minutes until fork-tender.
While potatoes boil, trim the ends of the green beans and mince the garlic.
Pat the salmon fillet dry with a paper towel and season both sides with sea salt and black pepper.
Heat the olive oil in a non-stick skillet over medium-high heat.
Place the salmon in the skillet skin-side down and sear for 4-5 minutes until the skin is crispy.
Flip the salmon and cook for an additional 3-4 minutes until the fish is opaque and flakes easily.
Remove the salmon from the pan and set aside to rest.
In the same skillet, add the green beans and minced garlic, sautéing for 3-5 minutes until the beans are tender-crisp and fragrant.
Drain the sweet potatoes and mash them thoroughly until smooth and creamy.
Plate the salmon alongside the sweet potato mash and green beans, finishing the entire dish with a fresh squeeze of lemon juice.