Is it OK to skip sequences?

Dear iliavko,
I'm happy to respond.

My friend, I am sorry to have to tell you this, but I believe you are selling yourself short. It is not a good sign to "give up" on any content area because it is too hard. In the business world, people who "give up" when something becomes too hard wind up setting an artificial ceiling for their financial success. The question that leads to mediocre results is "can I just skip this topic and see how I do?" The question that leads to excellence is "how do I need to push myself, to challenge myself, to make sense of this difficult topic?" It may seem more manageable to settle for the mediocre, but the grounds for regret are huge when you don't push yourself to do your best. Remember, your potential is always more than you can understand or appreciate at any moment. I want to reflect to you that you are capable of more than you think.

It's important for you to appreciate the deep interconnection of mathematical ideas. If you find sequences hard and decide to ignore them, chances are very good there are modes of mathematical understanding which you do not grasp and which will impact a variety of other topics. Conversely, if you take the steps to master sequences, I strongly suspect your understand of a few other topics in mathematics will be thereby deepened, simply because of the increase in sophistication of your mathematical understanding.

On the topic of sequences, see:
Sequences on the GMAT
GMAT Practice Problems: Sequences

The idea of sequences is actually closely related to the idea of functions. In a way, sequences are functions in which the input is always in the form of positive integers.

I would suggest: find sequence problems here on GMAT Club, ready the threads carefully, and then ask whatever you have to ask. Spell out very specifically what you get and what you don't get. Don't pose a lame lily-livered question, such as, "I don't get this. Please explain." Instead, post the most sophisticated and detailed questions you possibly can. See:
Asking Excellent Questions
Asking excellent questions is another of the habits of excellence. When you ask such a question on any of these threads, feel free to solicit my input, using the "mention this user" button. The super-genius Bunuel is also an excellent teacher.

Does all this make sense?
Mike