Note: This is a very opinion based answer, so some people will strongly disagree with me. But your question doesn't have a real good answer that would be valid for others as well.
My personal experience is that, to be good at hacking, ethical or not, you need to have a very strong drive to want to find out how things work, an eye for technical details, and the ability to figure out things of your own.
Noone i know who is good at hacking, reverse engineering, or anything in related fields, decided one day "I'd like to be a hacker, so let's learn how to do it". Rather, these guys cut open the heads of their sister's dolls at the age of 6 to find out how the mechanism worked that closed the eyes when you laid them to bed, got their first electrical shock at 12 when they opened some electronics device, and started hacking as a hobby in their teens. Staying up all night to finally find out how something worked seemed to be much more rewarding that, say, talking an alcoholic drink out of a barkeeper when you were underage.
Later, they turned the experience they had with this kind of stuff into a job. Much of this job belongs of long, arduous sessions at the computer, paying attention to every little detail, until you finally get your reward in that "yay! I did it!" feeling.
This kind of person is not, in my opinion, somebody who does an ERP consultant job for 10 years, given the chance to choose. But in the end, it's up to you to decide if you're this type.
I know many people who do a job they don't really like, work from 9 to 5 to earn their living, don't even want to think or talk about their job in their free time, and are still moderately successful in terms of money or social status. This is ok; many jobs aren't that demanding, but need to be done. However, this won't work if you intend to be a hacker. To be a successful hacker, you don't have to want to be a successful hacker, you have to be curious, need an intense appetite to satisfy that curiosity, and have a strong will to never stop attacking a problem until you solve it.
Now, it's up to you to decide if that appeals to you.