As a human being, it is natural to go through challenging phases of life. But all you need is to stay strong and endlessly believe in Allah. Yes, we can make dua for long life and invocate for the people we love. Allah has solutions for everything and to all kinds of problems in this universe. Fundamentals of Islam offer everyone to first pray for good health and then other prospects of life, as life and well-being is something that is irrespective of money.