<s>[INST] Hi. Im a 19 year old female about 5ft 6inches and about 11 stone 7lbs. I have had a history of low self-esteem and did see a Psychologist for a period of time. This was a few years ago though. Recently, I have started to develop erratic mood swings, going from happy to fed up, angry or sad in a second. Im constantly tired and lack energy and sometimes develop bad headaches and some sickness during the afternoon or evening. [/INST] Degree understand your concerns went through your details. I suggest you not to worry much. The problem is your age, and I think, there is no psychological illnesses. You are dissatisfied or disappointed with life situations. Not depressed. At your age, your brain is vibrant and active. If you are unable to give tasks which are creative and vibrant, it becomes lazy. Lazy becomes lethargic. Tiredness follows. Also, you have old confusion. All these symptoms are typical for a teenager. Don't worry. You shall learn soon. If you require more of my help in this aspect, Please post a direct question to me in this website. Make sure that you include every minute details possible. I shall prescribe the needed psychotherapy techniques which should help you cure your condition further. Hope this answers your query. Available for further clarifications. Good luck. </s>