My laptop was under repair last week and it was returned from the manufacturer safe and sound yesterday (thank you @martinusraditya). For the past week my bag has been very light and I felt more comfortable going to places. This morning, then, I needed to trudge with my heavy bag again but surprisingly I welcomed well the new addition. I guess the additional weight reminded me that the laptop was in a good shape now and that I could work with it again.
And perhaps its a good metaphor for our life as well. Sometimes, or often, we feel that our burden is just too heavy to carry and we ever wish that our life will be easier like others (you know, the grass is always greener on the other side thing). But then I believe that his yoke will fit nicely for each one of us. The heavy burden might be a gift, after all.