You can actually work on both at the same time. Recognize that all our success comes from Hashem and also work on developing Hakaoras Hatov to the brave fighters in the IDF who are moser nefesh constantly in many ways (risking life, giving up parnasa, family life, loss of Torah learning, etc). If you have trouble with this mussar excercise try to focus on one each week and switch off.
Bhatzlacha!