[VIDEO] Adorable toddler takes his first unassisted steps after multiple heart surgeries

Xander may be a tiny toddler, but he’s already been through a lot more than most adults will ever know.

Xander was born with six different heart defects and had his first surgery when he was only six weeks old–he’s had three since then and has at least two more to go.

Last April, the tiny tot went into cardiac arrest just hours after another operation—which alone is enough to dampen anyone’s spirits. But not Xander’s.

In an heartwarming video his mother Nicole shared, Xander smiles ear to ear as he takes his very first unassisted steps after a recent surgery–a milestone for the adorable child.