Hello thanks for asking from HCM
Cannabis is a common drug of abuse and you are smoking this drug since last 4 years. Symptoms like weakness,
tiredness, poor adjustments in environment, inability to control feeling etc are there due to chronic smoking of cannabis only. The drug can cause lack of motivation or
Amotivational syndrome. I would strongly advise you to stop smoking cannabis. Cannabis withdrawal usually doesn't present with severe symptoms. You can stop using the drug cold turkey. There will be no severe reaction, all reactions will occur due to psychological symptoms only like anxiety,
mild dizziness, craving of drug etc will be seen. You can
consult a Psychiatrist for these symptoms. Medicines like low dose benzodiazepines can relieve such anxiety.
For lack of energy drugs like
Modafinil can be used. The drug will increase motivation and day time alertness. Consult a Psychiatrist for that.
Thanks, hope this helps you