How do I heal the feeling of lack/not enough?🥺

I know that my limiting belief of “not having enough” (from childhood) is blocking my manifestations. I’ve tried mediations, EFT , journaling to heal this sense of lack with no luck. I would appreciate any advice/tips to help me overcome. I was going to get the Gabby Bernstein 21 day abundance challenge after seeing the ad on my IG and found this group while reading reviews. Thanking you all in advance!❤️💫