Brief Answer:
Remain motivated.

Detailed Answer:
Hi,
Thanks for choosing HealthcareMagic for your query.

As per your query regarding blood pressure is concerned its normal and well controlled by medicines.
Target blood pressure after age of 45 in male is less then 140/90mm of hg.
So just keep on taking the medicines you are on. However for your query regarding lack of confidence and coward nature. There is no treatment available for it you have to do it yourself.
Some important measures are-
Your degree of confidence, called self-confidence, is the trust or faith that you have in yourself and your abilities. Self esteem is the opinion you have of yourself. Realistic feelings of confidence and positive self-esteem affect how you think and act, how you feel about others, and how successful you are in life.

Some measures are-
. Positive self-talk
The way that you think about yourself has a huge influence on your self-esteem. If you keep telling yourself that you’re no good, you might just start to believe it even though it’s not true. If you notice that you practice negative self-talk often, check out some ways that you can challenge your negative thinking and build your confidence levels.

2. Don’t compare yourself to others
Everyone is great at something.

3. Exercise

Exercise helps to improve your mood.

4. Don’t strive for perfection

It’s really great if you want to do things well, but keep in mind that perfection isn’t possible. Even god is imperfect.
5. Don’t beat yourself up when you make a mistake

Everyone on the planet makes mistakes – it’s in our basic human nature.

6. Focus on the things you can change

There’s no point wasting all your energy thinking about things that you can’t change. Why don’t you have a think about some of the things that are in your power to control and see what you can do about those?

7. Do things that you enjoy

If you’re doing things that you enjoy you’re more likely to be thinking positively. Schedule time for fun and relaxation into every day.

8. Celebrate the small stuff

Start small and work your way up – you can’t expect any huge progress to be made overnight.

9. Be helpful and considerate

Not only is helping people a great way to boost the moods of others, but you might find that you feel better about yourself after doing something particularly excellent.

10. Surround yourself with supportive people

Don’t hang around people who bring you down. Find a group of people who make you feel good about yourself and avoid those who tend to trigger your negative thinking.

Remember failures are a part of life. Don't loose hope remain motivated. Don't compare don't listen just be yourself. Its your life. Live it the way you like.

Thanks.

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