When it comes to making excuses, I have found most are driven by three fears. Overcoming those fears starts with awareness and willingness to be courageously honest with yourself. That is probably the hardest step. The challenge, once you have taken that first step, is to continue the journey.
You'll face these fears for a time as they are rooted (often deeply) into our habitual excuses and go-to safe zones. The more you take action on them, challenge them, and engage these simple tools, the less resistance you will have long term.