Others in the thread have given you good advice on how to pick a market. Once you pick the market, you will still need to get past the fear and take action. I'm just starting out on my real estate investing journey, but I help people deal with fear all day long at my day job coaching people changing careers. One activity that seems to really help is called fear setting. You can check out the details here: https://www.ted.com/talks/tim_...
In summary, rather than writing your goals down, you write your fears down. You create 3 columns.
1. Define the fear.
2. How can you prevent the fear from becoming a reality?
3. If the fear does become a reality, how do you get back on track.
Example:
1. I am scared that I will not be able to collect as much rent as I planned.
2. I can get multiple opinions on the rent. I can ask my real estate agent and speak to several property managers in the area to get an accurate estimation of rent. After the house is under contract I can post the deal on the BP forums and get other peoples' insight into rental estimations.
3. I can raise the rent next year or take the lessons I learned on this deal and apply it to the next deal.
Hope that helps