Salesperson selling B2B technology such as banking or accounting software, Master Data Management, web security technology, compliance software, human resources software.
Skip college, (waste of money and time). Start at the bottom in your late teens early 20s and stick with it. Hit the phones, call businesses and generate opportunities, network like mad, schmooze, remember people's birthdays, attend trade conferences and stick with it. Use the energy you have in your early 20s to really carve yourself a reputation for hard work and intelligent selling. Remember that your peers are going to be the managing directors of other firms and you'll be their old buddy who they trust.
Don't believe the fairytale that there is a better career out there somewhere that would leave you feeling much more fullfilled. Every job has it's ups and downs which is why it is called "work". If it was pleasant they would not pay you to do it.
By 25 you can be on a basic salary of $90,000 per year and double that in commissions. By 35 you will be on $150-$175k pa basic and $250k-$300 with commission while still doing a 9-5 job and not killing yourself. A lot of these roles let you work from home several days per week.
If you are smart you'll have debt free 5 bedroom house before you are 40 in a nice suburb with decent schools. Then you can back pedal for the next 25 years.
Large firms are crying out for salespeople with EXPERIENCE. Experience often means simply having lots of contacts and being a safe bet. They want to hire mediocre people as that is safe for them.
Once you have 10 years "experience" under your belt you can make a decent living simply by job hopping and make a six-figure income without killing yourself.
And don't believe the myth that salespeople all need the gift of the gab. All you need to be as a salesperson is a person who is generally speaking liked by people and likes people.