No, not originally. The New Thought movement was launched by one man, Phineas Parkhurst Quimby, who had no known connection to occult traditions other than some contact with a traveling Mesmerist. You can read his story here:
After New Thought found its feet and its market in 19th-century America, occult schools borrowed many of its ideas, and also inserted occult teachings into New Thought books and periodicals; you also had a lot of hybrid traditions that combined New Thought and occultism -- in fact, most of American occultism from 1880 to 1980 can be described in exactly those terms. But New Thought wasn't invented by occultists. It was wild-caught, not farmed. ;-)
no subject
https://www.ecosophia.net/the-power-of-the-mind/
After New Thought found its feet and its market in 19th-century America, occult schools borrowed many of its ideas, and also inserted occult teachings into New Thought books and periodicals; you also had a lot of hybrid traditions that combined New Thought and occultism -- in fact, most of American occultism from 1880 to 1980 can be described in exactly those terms. But New Thought wasn't invented by occultists. It was wild-caught, not farmed. ;-)