Ymmv, if you have a good adviser then great. But I used to work in this area, and even in my first real job (not my first job in the industry though) the level of ignorance was brutally obvious.
For example, my first employer was a single adviser firm that just got acquired for $5m...this guy didn't know how to use Excel, he didn't know how to build a financial forecast, he didn't understand that life expectancy at birth was different to expectancy at retirement, he didn't understand basic elements of finance (for example, why you can't make money buying a stock and selling after they pay a dividend), he didn't understand how to compute returns, and falsified those numbers in marketing when they showed bad performance...and this is a guy who has hundreds of clients, and $100m+ in assets. However bad you think it is, it is much much worse.
Most of the people on here will do better if they apply a little time, and understand that human reasoning is flawed (i.e. don't get swept in the hot new thing). That is all that is required.