Please choose the correct ending to complete the given sentence: Youth: [header] How to be an efficient teenager [title] Establish priorities. [step] The first step in becoming more efficient is to figure out how you can best spend your time. To do that, you need to set some clear goals.

Ending1: Determine what kinds of commitments you really enjoy and what activities you particularly enjoy doing. And develop some degree of accountability about when you can do the least for yourself. Ending2: Once you've developed your priorities, establish a clear and realistic amount of time to devote to your ideas. [substeps] Some parameters you can set include something like: only 20 minutes of watching tv, using a laptop or tablet to study, and putting away and replacing older books. Ending3: Establishing your priorities is the best way to do that, as it requires you to think about what is most important to you. [substeps] Ask yourself several questions in order to determine your priorities. Ending4: Some goals that you can set are things that you can accomplish easily, things to do more efficiently, and things you can add something to your day. [substeps] For example, your goal could be to run for 200 miles.

Answer format: ending1/ending2/ending3/ending4