hello, You should have a healthy lifestyle like avoiding fatty, oily and high calorie diet. Have low salt diet and monitor blood pressure regularly thrice a day for one week then once or twice a week. Reading of must be a false reading, such readings should be reconfirmed. If bp is persistently more than 140/90 mmhg, then either dose of atenolol should be increased or better option to add another drug like Amlodipine or telmisartan. Atenolol is not a first line antihypertensive these days. Regular exercises like brisk walking, jogging according your capacity atleast 30 min a day and 5 days a week. Lots of green leafy vegetables, fruits, fish once or twice a week, avoid meat. Avoid smoking and alcohol if any. There shouldn t abdominal fat deposition or obesity. Get your lipid profile and sugars tested once..