Classes starts again - changing majors pros and cons

The bioinformatics course is a flipped-style class, where students watch lecture videos that teach them how to organise data, run analyses, and check the results. Then they do assignments, and come to class to discuss/seek help/ ask questions to finish the assignment. It's a much better system than the traditional class style. Firstly because students can watch lecture videos as many times as they want, whereas they have only one chance to catch and write down what the lecturer says in a traditional classroom setting. Second, it is easier to do the assignment because students will bring the assignment that they have already started and know where they are stuck with rather than starting homework after attending a lecture, get stuck, alone, and the lecture will proceed to the next topic. It's a very good opportunity to master basic skills of bioinformatics, which is very challenging to teach oneself. I don't know how much of it I will need in the future, but it will be very useful in my dissertation.

On the first day, though, there was the only classroom-style lecture. In one of the slides, the lecturer said when you first enter into a new field, nothing works in your first year, or the first stage. You will get a ton of error message and it won't just go. Therefore, you will need to spend some extra  time to get things going when you start something new. It is pretty much true about anything, like moving to a new environment, changing jobs, or starting a new discipline of study. The struggle is worthwhile because it widens your horizon, broadens your capability making you a more well-rounded person. On the other hand, frequent changes will prevent you from getting to know something at a deep level. It takes a long time to be an expert in anything. Balance of new and old is key. At this stage, I should give careful consideration on what I am going to start. Will it be useful in my future career? Will it be something that I will think that it was worth? Will I be willing to be patient until I overcome the initial struggle?