The spiritual traditions of Hinduism and Buddhism value the ability to focus awareness voluntarily, and have developed exercises to strengthen it . There are also certain kinds of meditation whose goal is to produce a non-centred 'global' awareness which is often seen as the opposite of a strong sense of self. Gurdjieff, for example, referred to the goal of his practices as 'Self remembering'. Find a a comfortable position. The exact placement of hands and feet is not important, within natural commonsense boundaries.
Some people like to sit cross-legged.
Others prefer to sit with legs together and pulled in, knees bent, feet flat. Either way is workable as long as the position is comfortable to you. Close your eyes. Focus all your attention on one color, your favorite color, or perhaps white or black. If any thoughts or feelings intrude, try to return your attention to the color you have chosen.