The most important thing in meditation practice is to adjust one's mentality, one's breathing and one's mentality. Especially at the beginning, when it reaches a certain temperature, everything is natural. On the contrary, you don't need to pay special attention, because Tao is natural. In addition, the effect of meditation is related to what you want to achieve, which can be said to be a secret!
Meditation time is generally chosen before going to bed at night (between 23- 1) and in the morning (between 3-5).
Time requirements, at least 30 minutes at a time, and then gradually increase. Until 2-3 hours a day, too little time is not enough.
How to be lucky is a special problem, which is related to the skills you have practiced. You can leave a message in my blog if you need any help.