Put your trust in God. Be focused, be determined, persist a little more. That dream will become a reality. Don't give up on your passion. Remember, winners don't quit and quitters don't win. Stay in there!
Don't subscribe to anyone that belittle you or says your goal can't become a fulfilment. Trust God. Encourage yourself in the Lord. If I share with you of how long I waited on God with my faith glued on Him and my focus on the achievement of the Doctorate Degree, you will marvel. I humbled myself to learn from those that have attained it before me and I never looked down on any of my colleagues. It's a lonely road as my research was not the same with my colleagues' neither my supervisor's or my other senior learned ones.
Knowledge has to be sought from different areas even from someone you believed is not as knowledgeable as you are. I need to let you know that God used one of my children to ask me a pertinent question I never knew would be asked me in one of my major presentations day a night before . I've shared this testimony with those that are closer to me.
Have this understanding that God positions good people/souls around us as our "Guardian Angels". Be quick to recognize them in your life journey. Jacques Rousseau also says that, "patience is bitter, but its fruit is sweet". This is true about life goals.
Remain focused, no matter the obstacles that may be challenging your determination. The road to success is not paved with gold. Persevere, remain focused and you shall achieve greatly. Never ever give up on your passion.