Yes, with conscious faith the size of a mustard seed, you can move mountains. Or, to phrase it differently, with faith the size of a mustard seed one can "build" mountains.
Strength is a result of conviction. When we know something is true from the very core of our being, then our willpower and dedication will be unwavering. Solar faith is a principle we need to generate and to cultivate on a daily basis. We do so by remaining firm in our spiritual practices of meditation, transmutation and philanthropic efforts to help humanity.
Also, we keep strength by working with our "Aun" און, sexual virility. This is how we cultivate the power of the שמש sun ("Shemesh" ) in order to become a "Sham-Shaun;" Samson: שמשון.
Joyful in hope, suffering in tribulation, be thou constant in thy prayer.
Benedictis, qui venit in nomine Domini. Osanna in excelsis.
"Blessed is he who comes in the name of the Lord. Hosanna in the highest!"