I am quickly realising that I need to stop overthinking because you end up;
Talking yourself out of things. Things that may have very well brought you joy or you may have loved.
Overthinking also wastes time, instead why not start the journey to discover things you love doing and strive for a more enriching life.
The other thing is in overthinking , you allow fear to creep and destruct your plans and vision.
So why not start small, small fires burn bushes.
As long as it is good and within your capacity - Do it. The bible, in Proverbs teaches to not withhold in doing good.
Don't overwhelm yourself with what the outcome is going to be - no one can predict this, instead set goals of what you want to achieve, Set realistic achievable goals and short term milestones so that you can trace your progress.