If you win the lottery, you will need to plan to keep as much as possible from Uncle Sam. The plan will include immediate assistance to manage the money. Making sure the investments are appropriate to the needs and risk tolerance of the winner. Creating different relationships to provide liquidity at death, but not increase the tax burden.
Planning can help keep friends, relatives, salespeople by having the winner say it is in trust.
If you don't win the lottery, you still need to plan for retirement and death. It may take more work to achieve realistic goals.