Prosperity and cyberspace have combined to make dealing with estates more difficult than in previous times. Rather than leaving a mess behind — the proverbial shoebox of unorganized documents  — one can make the task of heirs a lot easier some simple and easy steps. Put together a list of all of your financial accounts, the institutions where they are held, current balances and contact information. Add to that list the professionals you deal with and relevant passwords. Many people accumulate a hodgepodge of accounts, insurance policies and other assets, some with small balances, and it’s easy for someone not familiar with these accounts to overlook some. The guesswork at an emotional time to piece together someone’s financial life can be daunting even if you do manage to find everything. Many do not. Evidence of that is in every state capital where abandoned or lost accounts total in the billions. Some simple steps can space loved ones a lot of grief so don’t put this off and leave a mess behind.