Drug addiction is commonly term as brain disease which is severe and relapsing as it engage in compulsive behaviour in drug pleasure by seeking it despite the harmful consequences that follows (Lesiuk et al., 2010). Drugs alter normal brain arrangement and role that making quitting it very hard to achieve (Gould, 2010). The addiction makes them lose the ability of restricting themselves to resist the urges to consume the substances.
Heroin can be highly addictive illegal drug and also can be extremely powerful pain-killers. Heroin in scientific terms is ‘diacetylmorphine’ and it is a recognized mental disorder and is classified in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) with coding of 304.00 (Müller et al., 2011). Heroin is made from the seed pod of poppy plants (Morón et al., 2010). Heroin is an opioid drug made from morphine alkaloid found in opium and it is twice more intoxicating. Heroin usage can be by injecting, snorting and can be by smoking (Morón et al., 2010). Heroin can be highly addictive illegal drug and also can be extremely powerful pain-killers. Heroin can both cause benefit to patient who is down with terminal illness or can destroy a normal human mind (Angres et al., 2015). Short-term effects of heroin is feeling euphoric with dry mouth, flushing of the skin, heavy feelings in the hand and feet, clouded mental functioning, going conscious and semi-conscious by nodding the head back and forth (Angres et al., 2015). Long term health effects of heroin is collapsed veins, infection of the heart lining and valves, abscesses, constipation, stomach cramp, liver or kidney disease, lung complications and various types of pneumonia (Angres et al., 2015). In Singapore, the Central Narcotics Bureau (CNB) list the heroin in Class A controlled drug listed in the Misuse of Drugs Act, possession or consumption of Heroin can be imprisonment up to 10 years or fine $20,000 or both. Death penalty will be imposed if illegal trafficking being caught for more than 15 grams.
Unreasonable thoughts and cognitive misinterpretation can lead to negative emotions and reactions. The way we perceive the world and the way we see about things can make us feel bad or good, depends on the way that person is thinking.
Cognitive perspective concerning to recognize the fundamental craving for drug. Attention will be placed solely on the theory and less on thorough outcomes of this study. Purpose for that is cognitive theory connects the use of the drug and relapse which has increase in the past era and the discoveries are varied. Although the discoveries are varied, increasing indication supports the motivational significance of heroin craving in relation to substance usage.
Cognitive is link between emotion, thought and behaviour (Gould, 2010). An elaborate way of explaining this is what we feel influence the way we think and in turn how we think will also influence the way we behave. This has...