If you're year 7/8/9: What GCSEs are you going to take?
If you're doing GCSEs: What A levels do you think you'll take, or will you get a job instead?
If you're in College/Sixth form: Are you going to Uni or getting a job. If Uni - what subject. If Job - what type/field?
If you're at Uni: Where do you want to go when you're finished, have you already got a job placement for when you graduate?
If you're employed: Are you happy with your job? Will you try and work your way up in your current company or do you see yourself leaving soon?
Personally I'm quite organised and know what, and where I want to go despite only being year 10. For A levels I'll take Maths, Further Maths, French & Economics, then drop French for A2. Study Mathematics or Economics at Cambridge (hopefully) or another Russell Group Uni, and hopefully get a 1st and then go into Investment banking. By 40 I want to be a hedge fund manager