There are many forms to this help, most of the Witches ask for the help of Deities, those are magickal entities, that are also been referred to as 'Angels' or 'Gods'. Each of them has a name according to the tradition the Witch follows and the energies the Deity is 'in charge'.
Another way that was simpler for me at first, was welcoming Totems of animals, again those are represented by animals and have different characteristics.