Vishnu in Ocean with Ananta Sesha, the "Thousand-Headed" Snake

Depicted here with fifteen, in the Vaishnava tradition Ananta Sesha is said to have a thousand heads, on which he carries the planets.

Image of Satguru Sivaya Subramuniyaswami
If you sincerely want to make headway in meditation and continue to do so year after year after year, you have to approach it in a very positive, systematic way.