When we trust in the God we meet in Jesus Christ, no experience in life will be wasted.
Every adversity or heartache we endure or help others to endure will soften our hearts with compassion and fortify our characters with courage.
In these ways, God will help us to learn to rely more on Him and be more reliable friends to others. Clay in the potter's hand, our lives will give glory to God and encouragement from Him to those who need it.
I haven't yet learned this way of life. But I'm asking God to help me do so.