Since 2008 I have walked many and different Caminos, but I have to say the
Camino Frances is closest to my heart, bc of nature, grandness, infrastructure, people (I like people), and ease in many forms, (communications etc.).
The way I do it, is to decide where to start in Spain (I like Pamplona; easy, and The Pyrrenes are overrated IMHO, and SJPDP is just one of many places to start from), and then plan the traveling there (which will include flight(s), bus/train, etc.), with accomodation booked at my starting point. Next day I start out walking. I plan (not much) my distances, and maybe book ahead for 1-2 nights, depending on pilgrim traffic etc. Most often I do not book ahead. Easy life, winging it, flexible, etc.
I stop when I find it's been enough for one day. I check in at an available albergue, relax wth a lunch and a cold beer, watching pilgrims stressing by. I participate in communal dinnesr where possible; it's a great way to socialize and get to know other people along the way.
If I find I've had enough Camino walking (I no longer have the need for more Compostelas; Santiago is not my goal anymore, though a terrific place; the Way is my goal), I start planning my return home, ordering plane ticket(s) first (I never book return tickets; Life is what's happening to you while you are making other plans, and sh*t most often happens to your plans...), and then the travel to the nearest place to the airport for a relaxed evening. Everything laidback and relaxed; no stress.
Every fear you may have will be blown away after a few days; to do a Camino is one of the easiest things you can do: learn more here on the Forum, then just follow the flow when on the ground, and learn from your fellow pilgrims while walking. Easy. After one week you will be a cunning Camino expert,
I am now 70 years young. Spring chicken on this forum
Edit: I just saw a post by a 90-year old guy busy planning his next walk: I am truly a spring chicken in here...