2 weeks ago I just started a phd abroad (Germany) and I am Brazilian. Previously I was in job that bored me to death and I chose to leave it and come to Germany to live my dream and do a PhD. However, I am feeling that I made a wrong choice. Even if in my field is not so hard to get tenured in Brazil (usually 20 people compete for a position, but only 5 are real competition), I am feeling that I will never be able to achieve my goal. Rationally, I know that I can. But emotionally, I feel incapable. These negatives feelings about my future are making me want to call my former boss back begging for a job. Even if I know that if I choose to back to this job I will be miserable forever.
All these thoughts are keeping my motivations low, because I feel that I am just wasting my time in foreign cold country. How can focus in the present and enjoy? I am already doing therapy. Another thing that bothers me, is that I feel old. I am 29, and because of some personal choices and also because the undergrad plus masters in Brazil take 7 years, I feel very old compared to my europeans colleagues.