Who makes us feel confident?
Those that demonstrate to us we have worth, that we have potential. When we show each other appreciation, we give each other confidence to succeed.
True self confidence and strength comes from dedication and belief in ones mission's potential for success, not from inflating ones ego.
If you lack confidence and strength to move forward, perhaps you need to revaluate if you have dedication to some mission and if your mission is really one you believe to be blessed by heaven and so unquestionably bound for success.