Rather than framing a Lenten practice as a (sacrifical) giving up, frame the practice a (beneficial) taking-on.
The Jesuits Daniel J. Harrington and James F. Keenan argue for seven "new virtues" to replace the classical cardinal virtues. These seven are enjoined to the three theological virtues (Faith, Hope and Love) – being humble, being hospitable, being merciful, being faithful, being reconciling, being vigilant and being reliable (Harrington & Keenan, Paul and Virtue Ethics, Roman & Littlefield, USA, 2010, p126).
Those seven seem admirable habits to practice from any human perspective.