Labradorite is a great stone to use because it can help progress you in life. According to Healing With Crystals, it will "help if your home life has entered a rut or you feel that the fun has gone out of your life." It also helps transitions in the workplace, and because of its transitory properties, it's especially useful for writers of all genres.
Labradorite is often referred to as a stone of transformation. Charms of Light explains that it's "a useful companion through change, imparting strength and perseverance." This is because it balances your aura, helps you feel grounded mentally and spiritually, and erects a protective shield around you to ward off negative energy.
Physically, labradorite can relieve stress and aid your metabolism (via Healing With Crystals). It may also help you with colds, rheumatism, gout, and menstrual pains. It's even said to balance hormones just as it does your aura.
Mentally, labradorite is excellent at uncovering the reasons you may feel certain ways. It does this by unblocking your "unconscious and subconscious belief patterns that generate unpleasant emotional states." By using this stone, then, you're creating a better tomorrow for yourself in which you'll not only feel better but also be able to build yourself a better future.