Personal safety is one the biggest concerns when it comes to travelling solo. For the same, make sure you are not dressed like an obvious tourist and do not flash money or your expensive gadgets. Stick to main roads and well lit areas. Plus, in case of any confusion seek assistance from trustable sources such as tourist office, police station, embassy, high commission etc. Remember, always walk with confidence and carry your cool no matter what. It is always better not to let the strangers know that you're alone.
Accommodations Renting out vacation rentals is a great idea while you are travelling alone. Not only is it safe and budget friendly, but it also provide access to get in touch with the locales. This way you get to know their culture and traditions from up close. Also, vacation rentals are more spacious and offer more privacy as compared to hotels.
Don't Have Unrealistic Expectations Assess whether you are fit to travel alone or not based on your strengths and weaknesses. For example, if you are more of a dependent person who is not comfortable doing things on his/her own, then travelling alone can be difficult for you. The same goes true if you aren't sociable.