Everyone worries.
Rich people and poor people have different worries. One is concerned about acquiring more, while the other is concerned about not losing what little they have.
When we worry, we act like an unloved spiritual orphan, failing to recognise that we have a loving Father who knows what we need even if we don't tell Him. This identity crisis impacts our faith and how our faith works through God's perfect love (cf. Galatians 5:6).
Whenever we are buffeted by life's inexorable storms, we must remain strong and fight the good fight of faith, regardless of how we feel or think we understand. Learn how to put the faith you already have in and through Christ to good use. Most of the time, we don't need more faith, but less fear. The more we realise how much God loves us, the easier it is to believe in God.
This love of God produces a confident sense of peace, an awareness of the presence of God that is beyond understanding and imagination. Bad times and bad things happen not because God doesn't love you. But because God holds your future in His incredibly loving hands, those bad times and bad things have to yield to God's amazing plan for your life. They don't have the last word because God has the final say.
Consider these words of Jesus:
Peace I leave with you, My peace I give to you; not as the world gives do I give to you. Let not your heart be troubled, neither let it be afraid.
John 14:27 (NKJV)
God's peace in Christ is already ours, and it is available to anyone who believes. You can't have Jesus and not have His peace dwell within you. Don't settle for less than what God has for you.
Instead of seeking explanations for the causes of our grief and suffering, it would be better for our hearts and long-term happiness and well-being to redirect our focus on God and remember who we are to God and who God is to us.