It is normal that you doubt yourself and ask yourself "Am I on the right path?". Every great and successful person experience that. They also questioned themselves and thinking about stopping but they don't, it is simply because after feeling sad because results aren't showing up, after feeling devastated because hardwork isn't paying off they still believe that they are on the right path. But how do they know that they were on the right path? The answer is simple: YOU STILL WANT TO DO IT.
If the willingness to do it is greater than the willingness to stop then it simply means you are on the right path. Success is not about getting good results everyday. It is not simply about winning, it is also about staying on the game no mater what. People were always expecting results faster than 4 am that is why when they didn't get it they doubt themselves.
You are on the right path if you experienced that there are some days that you don't want to do it but you still end up doing it. In other words being on the right path means not giving up. Every path is the right path once there is still love remaining for taking that path. You may want to give up at some point in your journey but you can't understand why you still want to continue.
You are the only one who can answer if you are on the right path or not. Results doesn't matter, reality and technicality also doesn't matter. What matters is how you feel, if you feel you can't take it anymore and you don't want to move after thinking about it a couple of weeks then you're done. The path goes wrong and you have to take another path. The one that will decide if your path is right is your emotions and your willingness to keep going. If the passion and love is not there anymore then you are on the wrong path already.
You don't need to wonder if you are on the right path or not, just follow your emotions. Go for the most enjoyable path and the one that is worth sacrificing for. Choose the path that you know you will never regret in the end even if the results didn't show up, that is the right path.