That warms the heart (literal and figurative); esp. emotionally uplifting, sustaining, or gratifying; heartening, encouraging.

That heartens (in various senses of the verb); (now) esp. encouraging, cheering.

That encourages or tends to encourage.

That instils spirit; inspirational, inspiring, heartening. Cf. dispiriting, adj.

That inspirits; animating, encouraging, cheering.

That assures or gives confidence.