I can attest to this when in the early 2000′s I changed my eye color from Green/Brown to just Green. It took in total about 1 hour in about 2 weeks of thinking the thoughts. I used a knowing confidence in doing it. I realize these days using love from the heart is actually much faster.
Dr Bruce Lipton, a scientist was one of the first people to bring this to the public’s attention. Here is his video, it is a must view for those on a quest for the mind.