5. If youâ€™re making money, save it. When youâ€™re young, you donâ€™t always plan for a rainy day. It will come â€“ I promise! Itâ€™s ok to splurge on an item here and there, but save as much as you can. Youâ€™re in the best place to save money. You donâ€™t have a mortgage or expenses associated with living on your own yet. Itâ€™s never too early to start investing or purchasing stock.