What pieces of information would you use as stepping stones? What do you wish you have known at age 18 that would have contributed to more success? Where would you have invested more of your time and knowledge into?
I started my career as an engineer and transitioned into advertising and marketing.
Looking back, one thing I would have done is go and work for a successful ad/marketing agency, before starting my own company. Even if I had to work for free.
This would have shortened my learning curve regarding getting clients, delivering work, proposals and how to base your fees.
I got to where I needed to get, but took much longer.