Gems
I would suggest Amazonite: Amazonite is said to have a soothing effect on the nervous system. It improves confidence and helps calm emotional and mental turmoil.
Use Amazonite to alleviate stress and exhaustion and to promote courage of personal expression.
Amethyst: Amethyst has been a symbol of peace, purity and unification and can aid in bringing serenity and calmness. It is deemed “nature’s tranquilizer” by many healers.
Use amethyst to treat insomnia and promote peaceful and healing sleep. It is also commonly used to relieve headaches, nightmares, sugar imbalances and general edginess.
This gemstone is one of the most popular metaphysical healing stones and is also often used to overcome fears, stress and addictions.
You could also get your zodiac check and see what gems go with your birth sign.
Your own energy & mind also impacts the stone that you wear. Its a two way thing, flow of energy.
I've seen people wear stones for specific purposes, but later they complained they didn't see any good results, they felt somewhat the same.
So take your time, and see what gem your drawn to, check out its benefit, and wear the gem ur drawn to. Chances are your energy will be more attuned to that stone.