3 tips for those who are interested seriously in Ashtanga yoga
1. Search for the best Ashtanga yoga teacher in town. Take your time. Yet if you found him/her then stick to him/her.
2. Establish a daily practice.
3. Plan a trip to Gokulam, India, travel to the source. If it's not possible to fly this year, then perhaps next year. Have it on your list.
Once you're on your way don't rethink your decisions every other day.