A good question and quite complicated will answer in several posts.
The more assets you have, the more difficult the process of disappearing can be. Let’s take money in the bank; unless you pull it all out and stick it in a duffel bag, there will be a trace.
NOTE: This is a basic idea and for literary purposes.
Let’s assume you are moving overseas. One idea is to set up a few International Business Corporations (IBC). These are corporations that can bank in various countries but not do local business. Perhaps you have 200k in your home account. You open an IBC in Belize, transfer 200k. Then open and IBC in another country and transfer half, then you set up another IBC and send the balance and liquidate the Belize account. You do this a few times, and it can be difficult to trace your funds.