ꕥ Journaling (not necessarily in the morning).
I like to call this 'venting on the page'. Writing your thoughts down, stream of consciousness or with a specific writing prompt. This helps calm the racing mind because instead of flipping thoughts around in your head, you write them down, put them onto the page (or onto a screen) and this feels incredibly liberating. They're then "out" of your head. Writing also helps us think things through better, put things into perspective, and that alone can settle the mind.
ꕥ NLP tools (especially inducing calm/focused/centred states of mind)
Neuro-linguistic programming is all about being more aware of what is going on inside us (our thoughts and emotions), noticing our patterns of experience and then changing them so they serve us rather than stop us from living the way we want to live. We always have a choice in how we think and feel, often as simply as applying our focus in more constructive ways.
I love using NLP with my clients and on myself, because it's so much fun and so effective.
ꕥ Mindfulness practice
In simple terms, mindfulness means focusing your senses on the present moment in a non-judging way. There are different ways to practice mindfulness but an easy one is to notice your body, bringing your attention to one (or more) parts of your body, and just rest your attention there without thinking or judgement. You can also be mindful of your surroundings, again bringing all your senses to it, being really present and non-judgemental (not thinking about it, just being with it). You can practice mindfulness as part of a ritual or as a mindfulness meditation.
I hope these tools help you in settling your occasionally overthinking mind. I love talking about the ways that help us live a more conscious, joyful life, so do reach out if you have a question.