Any age is a good age. One technique is to observe your thoughts, and notice there is a gap between thinking thoughts. Dismiss your thoughts as they come in. And return to the gap. You will notice that. Thought are two types: falling backward ( guilt or shame,thoughts about the past) or leaning forward (anxiety,,thoughts about the future). You can label the thought when it comes in and return to the gap. Try to lengthen the gap and not spin off into positive or negative fantasy. This is a buddhist technique called vipassana meditation. P.S. trust your intuition and you will need no guide but yourself. Activate your genetic inheritance and access your DNA' s memories. Do this by looking into your cultural heritage on Google, and the mystic traditions associated with your lineage. Then things will come to you off the top of your head from your imagination, and that is the most powerful magick.