It's been a tough week in the world, but in the world of music, Demi Lovato's toughness has given her reason to be proud.

The superstar is a fighter, and had lots of ups and downs, so to see her earn her latest Top 20 hit on the Hot 100 this week, plus her second No. 1 on the Digital Song Sales chart after her prior release, "Anyone," is enough to make any Lovatic smile.

Lovato's song, "I Love Me," debuted at No. 18 on the Hot 100 (dated March 21), arriving as the week's top-selling track, and earning the star her 31st career entry in the chart. The song also debuted at No. 1 on the Digital Song Sales chart, with 38,000 sold in its first week.

Listen to & Stream Demi Lovato here.