Detachment is the ultimate goal for anyone who wants to enjoy life as it is. Letting go of someone you love, or your needy attachment to money, or any other form of outcome-dependence, is the best way to live.
You can manage your stress and anxiety be learning to love the process rather than the results. BUT… this is much easier said than done. If you really are sick of feeling insecure, and want to let it all go, this video will give you some practical tips.