Everyone of us had studied several years to have a foundation in the careers or dreams that we are aming for. Once graduated, we go to the field to make use of our skills to have a stable income. Working does bring food to the table. You might be planning to work several years, or might start a business after several years.
This kind of mindset is mostly positive, since everyone is thinking that there is a lot of time to each of us. But you should start thinking ahead on the worse thing that can happen. There is nothing bad to be prepare ahead of time.
For this purpose, taking an insurance policy is a great investment, as younger as possible. This kind of investment is not much heavy if you are already working, and single. Insurance can also appreciate more if you started early.