420€ Monthly disability pension at 18 years old.

Hello. I'm new to investing and I'm disabled which means I'm getting 420€ for free from the government every month on top of whatever career I'll build. I am currently unemployed as I'm a student but all of my expenses are taken care of which leaves me with this pension money that I have no relationship to as I didn't really work for it at all. I plan on getting to uni and eventually building a private psychotherapy practice in 15-20 years. My investing horizon is 30-40 years. I use revolut and